diff --git a/index.html b/index.html
index 1eaa375..c978437 100644
--- a/index.html
+++ b/index.html
@@ -5,15 +5,18 @@
   <meta charset="UTF-8" />
   <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
   <link rel="apple-touch-icon" href="/icons/icon-192.png" />
-  <meta name="theme-color" content="#3b5bdb" />
+  <meta name="theme-color" content="#1d4ed8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
   <title>Dashfront</title>
   <style>
+    /* First-paint colors. Mirrored from src/colors.js (MAIN_BACKGROUND /
+       THEME_COLOR) because this file must paint before the JS bundle loads.
+       Once the app boots, src/colors.js takes over via CSS custom properties. */
     html,
     body,
     #root {
       min-height: 100%;
-      background-color: #85b7ad;
+      background-color: #82b8b4;
     }
 
     html,
diff --git a/src/colors.js b/src/colors.js
index 41922b7..bf9ac62 100644
--- a/src/colors.js
+++ b/src/colors.js
@@ -1,2 +1,346 @@
-// Mirrored in index.html and index.css for paint before JS loads.
-export const MAIN_BACKGROUND = '#85b7ad';
+/**
+ * ============================================================================
+ *  CENTRAL COLOR PALETTE — the single source of truth for `dashfront`.
+ * ============================================================================
+ *
+ *  The palette is intentionally tiny: 1 white + 6 light greys + 6 dark greys
+ *  + 7 chromatic families (each a `dark`/`light` pair) = 20 base values.
+ *  There is no black: the darkest neutral is `DARK_6`, and every shadow or
+ *  scrim is an alpha of it (see `shade()`).
+ *
+ *  EVERYTHING ELSE IN THIS FILE IS DERIVED from those 20 values. Change one
+ *  base and the whole app follows, live, via Vite HMR.
+ *
+ *  HOW TO PLAY WITH THE COLORS
+ *  ---------------------------
+ *  1. Edit any of the 20 base values in section 1.
+ *  2. `CHROMA.<name>.dark`   → text, icons, borders, solid buttons.
+ *     `CHROMA.<name>.light`  → panel fills, chips, tints.
+ *
+ *  RULES FOR NEW CODE
+ *  ------------------
+ *  * Never write a hex/rgba literal in a component — import a token.
+ *  * Prefer a base token. Reach for a derived one only when it reads better.
+ */
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 1. THE 20 BASE VALUES
+ * -------------------------------------------------------------------------*/
+
+/** Pure white — cards, dialogs, page panels. */
+export const WHITE = '#ffffff';
+
+/** Light greys, ascending darkness. `LIGHT_1` is the faintest surface. */
+export const LIGHT_1 = '#fcfcfc';
+export const LIGHT_2 = '#fafafa';
+export const LIGHT_3 = '#f8fafc';
+export const LIGHT_4 = '#f1f5f9';
+export const LIGHT_5 = '#e2e8f0';
+export const LIGHT_6 = '#cbd5e1';
+
+/** Dark greys, descending lightness. `DARK_1` is muted text, `DARK_6` darkest. */
+export const DARK_1 = '#94a3b8';
+export const DARK_2 = '#64748b';
+export const DARK_3 = '#475569';
+export const DARK_4 = '#334155';
+export const DARK_5 = '#1e293b';
+export const DARK_6 = '#0f172a';
+
+/**
+ * The seven chromatic families.
+ *   dark  → text, icons, borders, solid buttons (readable on white)
+ *   light → panel fills, chips, tints
+ */
+export const CHROMA = {
+  RED: { dark: '#b91c1c', light: '#fecaca' },
+  ORANGE: { dark: '#d97706', light: '#fed7aa' },
+  YELLOW: { dark: '#ca8a04', light: '#fde68a' },
+  GREEN: { dark: '#15803d', light: '#bbf7d0' },
+  PETROL: { dark: '#0f766e', light: '#99f6e4' },
+  BLUE: { dark: '#1d4ed8', light: '#bfdbfe' },
+  PURPLE: { dark: '#6d28d9', light: '#ddd6fe' },
+};
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 2. COLOR MATH  (the only functions in this file)
+ * -------------------------------------------------------------------------*/
+
+function toHex(parts) {
+  return `#${parts
+    .map((v) => Math.max(0, Math.min(255, Math.round(v))).toString(16).padStart(2, '0'))
+    .join('')}`;
+}
+
+function channels(hex) {
+  return [1, 3, 5].map((i) => parseInt(hex.slice(i, i + 2), 16));
+}
+
+/** Linear blend: `amount` 0 → `a`, 1 → `b`. */
+export function mix(a, b, amount) {
+  const ca = channels(a);
+  const cb = channels(b);
+  return toHex(ca.map((v, i) => v + (cb[i] - v) * amount));
+}
+
+/** `color` at `opacity`, as an `rgba()` string. */
+export function alpha(color, opacity) {
+  const [r, g, b] = channels(color);
+  return `rgba(${r}, ${g}, ${b}, ${opacity})`;
+}
+
+/** An alpha of `DARK_6` — our stand-in for "black". */
+export const shade = (opacity) => alpha(DARK_6, opacity);
+
+/** An alpha of `WHITE` — used for text and highlights over dark surfaces. */
+export const veil = (opacity) => alpha(WHITE, opacity);
+
+/** A lighter tint of a chroma family: 0 → `light`, 1 → white. */
+const tint = (family, amount) => mix(CHROMA[family].light, WHITE, amount);
+
+/** Resolve a `{ dark, light }` pair against the active MUI theme. */
+export function byMode(theme, pair, fallback) {
+  if (theme.palette.mode === 'dark' && pair.dark != null) return pair.dark;
+  return pair.light ?? fallback;
+}
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 3. BRAND & SHELL
+ * -------------------------------------------------------------------------*/
+
+/** App background — a soft petrol wash. */
+export const MAIN_BACKGROUND = mix(WHITE, CHROMA.PETROL.dark, 0.52);
+
+/** MUI `palette.primary.main`. */
+export const PRIMARY = CHROMA.PETROL.dark;
+
+/** MUI `palette.background.paper`. */
+export const PAPER = WHITE;
+
+/** `meta[name="theme-color"]` in `index.html`. */
+export const THEME_COLOR = CHROMA.BLUE.dark;
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 4. NEUTRAL SURFACES
+ * -------------------------------------------------------------------------*/
+
+export const SURFACE_FAINT = LIGHT_1; // attachment cards
+export const SURFACE_SUBTLE = LIGHT_2; // placeholders, letterboxes
+export const SURFACE_BASE = LIGHT_3; // panels, tiles, default tint
+export const SURFACE_RAISED = LIGHT_4; // inset boxes, table heads, chips
+export const BORDER = LIGHT_5; // dividers, outlines, placeholders
+export const BORDER_STRONG = LIGHT_6; // muted rules, checkerboard
+
+export const TEXT_MUTED = DARK_1;
+export const TEXT_SECONDARY = DARK_2;
+export const TEXT_BODY = DARK_3;
+export const TEXT_STRONG = DARK_4;
+export const INK = DARK_5; // barcode strokes
+export const INK_STRONG = DARK_6; // label text on light chips
+
+/** Semi-transparent panel wash for empty states. */
+export const SURFACE_WASH = alpha(SURFACE_BASE, 0.7);
+
+/** Neutral bubble / dialog fill that follows the active mode. */
+export const NEUTRAL_BUBBLE = { dark: WHITE, light: LIGHT_4 };
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 5. CHROMA DERIVATIONS
+ *    Every pastel used for panels, chips and tiles comes from here.
+ * -------------------------------------------------------------------------*/
+
+export const RED_BG = tint('RED', 0.85);
+export const RED_PANEL = CHROMA.RED.light;
+export const RED_SOFT = tint('RED', 0.35);
+export const RED = CHROMA.RED.dark;
+export const RED_HOVER = mix(CHROMA.RED.dark, CHROMA.ORANGE.dark, 0.5);
+export const RED_TINT = alpha(CHROMA.RED.dark, 0.12);
+export const RED_GLOW = alpha(CHROMA.RED.dark, 0.6);
+
+export const ORANGE_BG = tint('ORANGE', 0.7);
+export const ORANGE_PANEL = CHROMA.ORANGE.light;
+export const ORANGE = CHROMA.ORANGE.dark;
+
+export const YELLOW_BG = tint('YELLOW', 0.75);
+export const YELLOW_PANEL = tint('YELLOW', 0.4);
+export const YELLOW = CHROMA.YELLOW.dark;
+
+export const GREEN_BG = tint('GREEN', 0.75);
+export const GREEN_PANEL = CHROMA.GREEN.light;
+export const GREEN_SOFT = tint('GREEN', 0.15);
+export const GREEN = CHROMA.GREEN.dark;
+
+export const PETROL_BG = tint('PETROL', 0.85);
+export const PETROL_PANEL = CHROMA.PETROL.light;
+export const PETROL = CHROMA.PETROL.dark;
+
+export const BLUE_BG = tint('BLUE', 0.85);
+export const BLUE_PANEL = CHROMA.BLUE.light;
+export const BLUE_SOFT = tint('BLUE', 0.25);
+export const BLUE = CHROMA.BLUE.dark;
+export const BLUE_GLOW = alpha(CHROMA.BLUE.dark, 0.6);
+export const BLUE_SHADOW = alpha(CHROMA.BLUE.dark, 0.25);
+export const BLUE_TINT = alpha(CHROMA.BLUE.dark, 0.12);
+export const BLUE_BORDER = alpha(CHROMA.BLUE.dark, 0.3);
+
+export const PURPLE_BG = tint('PURPLE', 0.6);
+export const PURPLE_PANEL = CHROMA.PURPLE.light;
+export const PURPLE_SOFT = tint('PURPLE', 0.3);
+export const PURPLE = CHROMA.PURPLE.dark;
+
+/** Between violet and red — used for the article list editor. */
+export const MAGENTA_PANEL = mix(CHROMA.PURPLE.light, CHROMA.RED.light, 0.45);
+
+/** Between blue and petrol — used for brand text over photos. */
+export const ICE = mix(CHROMA.BLUE.light, CHROMA.PETROL.light, 0.4);
+
+/** Transparent checkerboard behind image-search results. */
+export const CHECKERBOARD = `linear-gradient(45deg, ${BORDER_STRONG} 25%, transparent 25%), linear-gradient(-45deg, ${BORDER_STRONG} 25%, transparent 25%), linear-gradient(45deg, transparent 75%, ${BORDER_STRONG} 75%), linear-gradient(-45deg, transparent 75%, ${BORDER_STRONG} 75%)`;
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 6. STATUS & FEEDBACK
+ * -------------------------------------------------------------------------*/
+
+export const ERROR = RED;
+export const ERROR_HOVER = mix(RED, INK, 0.35);
+export const LINK = BLUE;
+
+/** Selection state for list rows. */
+export const SELECT_BG = BLUE_TINT;
+export const SELECT_BG_HOVER = alpha(CHROMA.BLUE.dark, 0.16);
+export const SELECT_BORDER = BLUE_BORDER;
+
+/** SortableJS drag ghost — also published as a CSS variable. */
+export const SORT_GHOST = GREEN;
+export const SORT_GHOST_BG = alpha(CHROMA.GREEN.dark, 0.12);
+
+/** "Processing…" ribbon on image search results. */
+export const INFO_RIBBON = alpha(CHROMA.BLUE.dark, 0.92);
+
+/** Delicate fills used on top of panel colors. */
+export const TINT_FAINT = shade(0.01);
+export const TINT_HAIRLINE = shade(0.03);
+export const TINT_SUBTLE = shade(0.04);
+export const TINT_ROW_HOVER = shade(0.05);
+export const TINT_CHIP = shade(0.06);
+export const TINT_CARD_HOVER = shade(0.06);
+export const TINT_PILL = shade(0.08);
+export const TINT_STRONG = shade(0.12);
+export const TINT_PILL_ACTIVE = shade(0.14);
+
+/** Darkening for white text/icons sitting on imagery. */
+export const SCRIM_SOFT = shade(0.35);
+export const SCRIM_MEDIUM = shade(0.45);
+export const SCRIM_BADGE = shade(0.5);
+export const SCRIM_BUTTON = shade(0.55);
+export const SCRIM_ACTION = shade(0.6);
+export const SCRIM_LABEL = shade(0.65);
+export const SCRIM_STRONG = shade(0.75);
+export const SCRIM_HEAVY = shade(0.85);
+export const SCRIM_INK = shade(0.95);
+
+/** White overlays: hover states on dark chrome, text on imagery. */
+export const VEIL_FAINT = veil(0.04);
+export const VEIL_SUBTLE = veil(0.05);
+export const VEIL_CHIP = veil(0.08);
+export const VEIL_HOVER = veil(0.15);
+export const VEIL_DISABLED = veil(0.3);
+export const VEIL_MUTED = veil(0.35);
+export const VEIL_PANEL = veil(0.55);
+export const VEIL_TEXT = veil(0.8);
+export const VEIL_CARD = veil(0.85);
+export const VEIL_CARD_STRONG = veil(0.9);
+export const VEIL_OVERLAY = veil(0.92);
+export const VEIL_SOLID = veil(1);
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 7. DARK-MODE PAIRS  (resolve with `byMode(theme, PAIR)`)
+ * -------------------------------------------------------------------------*/
+
+export const SURFACE_SUBTLE_PAIR = { light: TINT_HAIRLINE, dark: VEIL_FAINT };
+export const TABLE_HEADER_PAIR = { light: TINT_SUBTLE, dark: VEIL_SUBTLE };
+export const CODE_INLINE_PAIR = { light: TINT_CHIP, dark: VEIL_CHIP };
+export const CODE_BLOCK_PAIR = { light: TINT_CHIP, dark: SCRIM_SOFT };
+export const ASK_PROMPT_BG_PAIR = { light: BLUE_BG, dark: BLUE_TINT };
+export const ASK_PROMPT_BORDER_PAIR = { light: BLUE_PANEL, dark: BLUE_BORDER };
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 8. SIDEBAR NAVIGATION
+ * -------------------------------------------------------------------------*/
+
+/** Deep petrol — the app's structural dark. */
+export const NAV_SURFACE = mix(DARK_6, CHROMA.PETROL.dark, 0.3);
+
+/** Horizontal sheen across the sidebar. */
+export const NAV_BACKGROUND = `linear-gradient(90deg, ${mix(NAV_SURFACE, DARK_6, 0.4)} 0%, ${mix(NAV_SURFACE, WHITE, 0.06)} 25%, ${NAV_SURFACE} 60%, ${mix(NAV_SURFACE, DARK_6, 0.3)} 100%)`;
+
+export const NAV_ITEM = mix(WHITE, CHROMA.PETROL.dark, 0.45);
+export const NAV_ITEM_HOVER = mix(DARK_5, CHROMA.PETROL.dark, 0.3);
+export const NAV_ITEM_HOVER_TEXT = mix(WHITE, CHROMA.PETROL.dark, 0.1);
+export const NAV_ITEM_ACTIVE = mix(DARK_5, CHROMA.PETROL.dark, 0.55);
+export const NAV_ITEM_ACTIVE_TEXT = mix(CHROMA.PETROL.light, WHITE, 0.15);
+
+/** Accent for active items and live draft badges. */
+export const NAV_ITEM_ACTIVE_ACCENT = CHROMA.PETROL.light;
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 9. CHAT / AI ASSISTANT
+ * -------------------------------------------------------------------------*/
+
+export const CHAT = CHROMA.BLUE.dark;
+export const CHAT_BUSY = CHROMA.ORANGE.dark;
+export const CHAT_PENDING = mix(CHROMA.ORANGE.dark, CHROMA.RED.dark, 0.5);
+
+/** Pulsing "assistant needs input" halo on the FAB. */
+export const CHAT_FAB_PENDING = `linear-gradient(135deg, ${CHAT_BUSY} 0%, ${CHAT_PENDING} 100%)`;
+/** Busy ("thinking") FAB. */
+export const CHAT_FAB_BUSY = `linear-gradient(135deg, ${CHAT_BUSY} 0%, ${mix(CHAT_BUSY, INK, 0.25)} 100%)`;
+
+/** Matching drop shadows, so the FAB appears to float in the active color. */
+export const CHAT_FAB_SHADOW_IDLE = `0 8px 24px ${alpha(CHAT, 0.35)}`;
+export const CHAT_FAB_SHADOW_BUSY = `0 8px 24px ${alpha(CHAT_BUSY, 0.35)}`;
+export const CHAT_FAB_SHADOW_PENDING = `0 8px 24px ${alpha(CHAT_PENDING, 0.45)}`;
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 10. GRADIENTS & SHADOWS
+ * -------------------------------------------------------------------------*/
+
+/** Bottom scrims that keep captions legible over photos. */
+export const SCRIM_TILE = `linear-gradient(transparent, ${SCRIM_LABEL})`;
+export const SCRIM_ATTACHMENT = `linear-gradient(transparent, ${SCRIM_STRONG} 40%, ${SCRIM_HEAVY})`;
+
+/** Text glow for tile captions drawn over imagery. */
+export const TEXT_GLOW_DARK = `0 1px 3px ${SCRIM_INK}, 0 0 2px ${SCRIM_HEAVY}`;
+export const TEXT_GLOW_LIGHT = `0 0 3px ${VEIL_SOLID}, 0 0 6px ${VEIL_CARD_STRONG}, 0 1px 2px ${VEIL_CARD_STRONG}`;
+
+export const SHADOW_CARD = `0 1px 4px ${TINT_CARD_HOVER}`;
+export const SHADOW_DIALOG = `0 20px 40px ${shade(0.2)}`;
+export const SHADOW_POPOVER = `0 8px 28px ${shade(0.2)}`;
+export const SHADOW_BADGE = `0 2px 5px ${SCRIM_SOFT}`;
+export const SHADOW_DRAG = `0 8px 20px ${shade(0.28)}`;
+export const SHADOW_SORTABLE = `0 4px 16px ${TINT_STRONG}`;
+export const SHADOW_DRAWER = `-8px 0 32px ${TINT_STRONG}`;
+export const SHADOW_THUMB_RING = `0 0 0 1px ${TINT_STRONG}`;
+export const SHADOW_TAB = `drop-shadow(0px 2px 4px ${shade(0.2)}) drop-shadow(0px 4px 5px ${TINT_PILL_ACTIVE}) drop-shadow(0px 1px 10px ${TINT_STRONG})`;
+export const SHADOW_BUBBLE_USER = `0 2px 8px ${BLUE_SHADOW}`;
+export const SHADOW_BUBBLE_ASSISTANT = `0 1px 4px ${TINT_ROW_HOVER}`;
+
+/* ────────────────────────────────────────────────────────────────────────────
+ * 11. CSS VARIABLE BRIDGE
+ *     `src/index.css` cannot import this module, so these few tokens are
+ *     published as `var(--df-*)` custom properties by `installCssVars()`.
+ * -------------------------------------------------------------------------*/
+
+export const CSS_VARS = {
+  '--df-main-background': MAIN_BACKGROUND,
+  '--df-sort-ghost': SORT_GHOST,
+  '--df-sort-ghost-tint': SORT_GHOST_BG,
+  '--df-shadow-sortable': SHADOW_SORTABLE,
+  '--df-shadow-drag': SHADOW_DRAG,
+};
+
+/** Publish {@link CSS_VARS} onto `:root`. Call once at startup. */
+export function installCssVars(target = document.documentElement) {
+  for (const [name, value] of Object.entries(CSS_VARS)) {
+    target.style.setProperty(name, value);
+  }
+}
diff --git a/src/components/AppShell.jsx b/src/components/AppShell.jsx
index ed27826..f055195 100644
--- a/src/components/AppShell.jsx
+++ b/src/components/AppShell.jsx
@@ -13,6 +13,9 @@ import { NAV_ITEMS, SUB_NAV, resolveActiveNav, resolveActiveSub } from '../nav';
 import { artikelQueryPath } from './article/artikelQuery';
 import { defaultCategoryPath } from './category/categoryRoute';
 import { navigationAutomat } from '../automats';
+import {
+  NAV_SURFACE,
+} from '../colors';
 import { ChatFab, ChatDrawer } from './chat';
 
 
@@ -51,7 +54,7 @@ class AppSidebar extends PureComponent {
           flexShrink: 0,
           display: 'flex',
           flexDirection: 'column',
-          backgroundColor: theme.nav.backgroundColor || '#1a3533',
+          backgroundColor: theme.nav.backgroundColor || NAV_SURFACE,
           background: theme.nav.background,
           position: 'sticky',
           top: 0,
diff --git a/src/components/HelpBadge.jsx b/src/components/HelpBadge.jsx
index d11fa2c..4f85759 100644
--- a/src/components/HelpBadge.jsx
+++ b/src/components/HelpBadge.jsx
@@ -8,6 +8,13 @@ import Popper from '@mui/material/Popper';
 import Typography from '@mui/material/Typography';
 import CloseIcon from '@mui/icons-material/Close';
 import { helpAutomat } from '../automats';
+import {
+  RED,
+  RED_HOVER,
+  SHADOW_BADGE,
+  SHADOW_POPOVER,
+  WHITE,
+} from '../colors';
 
 let nextHelpBadgeId = 0;
 
@@ -159,7 +166,7 @@ class HelpBadge extends PureComponent {
               borderRadius: 2,
               border: '1px solid',
               borderColor: 'divider',
-              boxShadow: '0 8px 28px rgba(0,0,0,0.2)',
+              boxShadow: SHADOW_POPOVER,
             }}
           >
             <Box
@@ -177,8 +184,8 @@ class HelpBadge extends PureComponent {
                     width: 18,
                     height: 18,
                     borderRadius: '50%',
-                    bgcolor: '#dc2626',
-                    color: '#ffffff',
+                    bgcolor: RED,
+                    color: WHITE,
                     display: 'flex',
                     alignItems: 'center',
                     justifyContent: 'center',
@@ -246,15 +253,15 @@ class HelpBadge extends PureComponent {
             onClick={this.handleBadgeClick}
             onKeyDown={this.handleBadgeKeyDown}
             sx={{
-              bgcolor: '#dc2626',
-              color: '#ffffff',
+              bgcolor: RED,
+              color: WHITE,
               fontWeight: 800,
               fontSize: '0.78rem',
               width: 20,
               height: 20,
               minWidth: 20,
               borderRadius: '50%',
-              boxShadow: '0 2px 5px rgba(0,0,0,0.35)',
+              boxShadow: SHADOW_BADGE,
               cursor: 'pointer',
               display: 'inline-flex',
               alignItems: 'center',
@@ -262,7 +269,7 @@ class HelpBadge extends PureComponent {
               userSelect: 'none',
               transition: 'background-color 0.15s ease',
               '&:hover': {
-                bgcolor: '#b91c1c',
+                bgcolor: RED_HOVER,
               },
               ...badgeSx,
               ...sx,
@@ -308,20 +315,20 @@ class HelpBadge extends PureComponent {
           sx={{
             display: 'inline-flex',
             '& .MuiBadge-badge': {
-              bgcolor: '#dc2626',
-              color: '#ffffff',
+              bgcolor: RED,
+              color: WHITE,
               fontWeight: 800,
               fontSize: '0.78rem',
               width: 20,
               height: 20,
               minWidth: 20,
               borderRadius: '50%',
-              boxShadow: '0 2px 5px rgba(0,0,0,0.35)',
+              boxShadow: SHADOW_BADGE,
               cursor: 'pointer',
               p: 0,
               transition: 'background-color 0.15s ease',
               '&:hover': {
-                bgcolor: '#b91c1c',
+                bgcolor: RED_HOVER,
               },
               ...badgeSx,
             },
diff --git a/src/components/LoginPage.jsx b/src/components/LoginPage.jsx
index b90b02e..ab028f6 100644
--- a/src/components/LoginPage.jsx
+++ b/src/components/LoginPage.jsx
@@ -17,6 +17,9 @@ import {
 } from '../auth/googleSignIn';
 
 import quixposLogo from '../assets/quixpos-logo.png';
+import {
+  NAV_SURFACE,
+} from '../colors';
 
 class LoginPage extends PureComponent {
   constructor(props) {
@@ -127,7 +130,7 @@ class LoginPage extends PureComponent {
             <Typography
               variant="h5"
               component="h1"
-              sx={{ fontWeight: 700, color: '#1a3533', letterSpacing: '-0.01em' }}
+              sx={{ fontWeight: 700, color: NAV_SURFACE, letterSpacing: '-0.01em' }}
             >
               QuixPOS
             </Typography>
diff --git a/src/components/article/ArticleImageSearchDialog.jsx b/src/components/article/ArticleImageSearchDialog.jsx
index de49969..b743852 100644
--- a/src/components/article/ArticleImageSearchDialog.jsx
+++ b/src/components/article/ArticleImageSearchDialog.jsx
@@ -29,6 +29,14 @@ import artikelAutomat from '../../automats/artikelAutomat';
 import { articleWithUploadedPhoto } from '../../utils/articleDetail';
 import { prepareArticlePhoto } from '../../utils/prepareArticlePhoto';
 import { requireObject } from '../../utils/apiShape';
+import {
+  CHECKERBOARD,
+  INFO_RIBBON,
+  SCRIM_LABEL,
+  VEIL_CARD,
+  VEIL_OVERLAY,
+  WHITE,
+} from '../../colors';
 
 
 function computeDefaultQuery(article) {
@@ -502,9 +510,8 @@ export default class ArticleImageSearchDialog extends PureComponent {
                       overflow: 'hidden',
                       border: '1px solid',
                       borderColor: isThisProcessing ? 'primary.main' : 'divider',
-                      bgcolor: '#fff',
-                      backgroundImage:
-                        'linear-gradient(45deg, #f0f0f0 25%, transparent 25%), linear-gradient(-45deg, #f0f0f0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #f0f0f0 75%), linear-gradient(-45deg, transparent 75%, #f0f0f0 75%)',
+                      bgcolor: WHITE,
+                      backgroundImage: CHECKERBOARD,
                       backgroundSize: '16px 16px',
                       backgroundPosition: '0 0, 0 8px, 8px -8px, -8px 0px',
                       cursor: processingId ? 'default' : 'pointer',
@@ -567,8 +574,8 @@ export default class ArticleImageSearchDialog extends PureComponent {
                           height: 16,
                           fontSize: '0.62rem',
                           fontWeight: 600,
-                          bgcolor: 'rgba(0, 0, 0, 0.65)',
-                          color: '#fff',
+                          bgcolor: SCRIM_LABEL,
+                          color: WHITE,
                           pointerEvents: 'none',
                           px: 0.25,
                         }}
@@ -586,9 +593,9 @@ export default class ArticleImageSearchDialog extends PureComponent {
                           right: 0,
                           py: 0.6,
                           px: 0.8,
-                          bgcolor: 'rgba(25, 118, 210, 0.92)',
+                          bgcolor: INFO_RIBBON,
                           backdropFilter: 'blur(3px)',
-                          color: '#fff',
+                          color: WHITE,
                           display: 'flex',
                           alignItems: 'center',
                           justifyContent: 'center',
@@ -615,7 +622,7 @@ export default class ArticleImageSearchDialog extends PureComponent {
                         sx={{
                           position: 'absolute',
                           inset: 0,
-                          bgcolor: 'rgba(255, 255, 255, 0.92)',
+                          bgcolor: VEIL_OVERLAY,
                           backdropFilter: 'blur(3px)',
                           display: 'flex',
                           flexDirection: 'column',
@@ -662,10 +669,10 @@ export default class ArticleImageSearchDialog extends PureComponent {
                             onClick={(e) => this.handleCopyUrl(img.url, e)}
                             sx={{
                               p: 0.4,
-                              bgcolor: 'rgba(255, 255, 255, 0.85)',
+                              bgcolor: VEIL_CARD,
                               backdropFilter: 'blur(2px)',
                               boxShadow: 1,
-                              '&:hover': { bgcolor: '#fff' },
+                              '&:hover': { bgcolor: WHITE },
                             }}
                           >
                             <ContentCopyIcon sx={{ fontSize: 13, color: 'text.secondary' }} />
@@ -677,10 +684,10 @@ export default class ArticleImageSearchDialog extends PureComponent {
                             onClick={(e) => this.handleOpenUrl(img.url, e)}
                             sx={{
                               p: 0.4,
-                              bgcolor: 'rgba(255, 255, 255, 0.85)',
+                              bgcolor: VEIL_CARD,
                               backdropFilter: 'blur(2px)',
                               boxShadow: 1,
-                              '&:hover': { bgcolor: '#fff' },
+                              '&:hover': { bgcolor: WHITE },
                             }}
                           >
                             <OpenInNewIcon sx={{ fontSize: 13, color: 'text.secondary' }} />
diff --git a/src/components/article/ArticlePhoto.jsx b/src/components/article/ArticlePhoto.jsx
index 1999cab..85e5414 100644
--- a/src/components/article/ArticlePhoto.jsx
+++ b/src/components/article/ArticlePhoto.jsx
@@ -2,6 +2,9 @@ import { Component } from 'react';
 import Box from '@mui/material/Box';
 import { thumb } from '../../api';
 import ThumbHashImage from './ThumbHashImage';
+import {
+  SCRIM_SOFT,
+} from '../../colors';
 
 class ArticlePhoto extends Component {
   constructor(props) {
@@ -53,7 +56,7 @@ class ArticlePhoto extends Component {
           justifyContent: 'center',
           borderRadius: fill ? 0 : 2,
           overflow: 'hidden',
-          bgcolor: 'rgba(0, 0, 0, 0.35)',
+          bgcolor: SCRIM_SOFT,
           ...sx,
         }}
       >
diff --git a/src/components/article/ArticlePhotosDialog.jsx b/src/components/article/ArticlePhotosDialog.jsx
index 77966f4..6a355a1 100644
--- a/src/components/article/ArticlePhotosDialog.jsx
+++ b/src/components/article/ArticlePhotosDialog.jsx
@@ -27,22 +27,30 @@ import {
 } from '../../utils/articleDetail';
 import { notifyError } from '../../utils/notify';
 import { readClipboardImage } from '../../utils/pasteImage';
+import {
+  SCRIM_BUTTON,
+  SCRIM_LABEL,
+  SCRIM_SOFT,
+  SCRIM_STRONG,
+  VEIL_MUTED,
+  WHITE,
+} from '../../colors';
 import { prepareArticlePhoto } from '../../utils/prepareArticlePhoto';
 import ArticlePhoto from './ArticlePhoto';
 import ArticleImageSearchDialog from './ArticleImageSearchDialog';
 
 const overlayChipSx = {
   height: 22,
-  bgcolor: 'rgba(0, 0, 0, 0.65)',
-  color: '#fff',
+  bgcolor: SCRIM_LABEL,
+  color: WHITE,
   '& .MuiChip-label': { px: 0.75, fontSize: 11 },
 };
 
 const overlayIconSx = {
-  color: '#fff',
-  bgcolor: 'rgba(0, 0, 0, 0.55)',
-  '&:hover': { bgcolor: 'rgba(0, 0, 0, 0.75)' },
-  '&.Mui-disabled': { color: 'rgba(255,255,255,0.35)', bgcolor: 'rgba(0,0,0,0.35)' },
+  color: WHITE,
+  bgcolor: SCRIM_BUTTON,
+  '&:hover': { bgcolor: SCRIM_STRONG },
+  '&.Mui-disabled': { color: VEIL_MUTED, bgcolor: SCRIM_SOFT },
 };
 
 class ArticlePhotosDialog extends Component {
diff --git a/src/components/article/ArticleStockAdjustDialog.jsx b/src/components/article/ArticleStockAdjustDialog.jsx
index 4698196..1f102f6 100644
--- a/src/components/article/ArticleStockAdjustDialog.jsx
+++ b/src/components/article/ArticleStockAdjustDialog.jsx
@@ -32,6 +32,15 @@ import { formatStock } from './searchFormat';
 import { notifyError } from '../../utils/notify';
 import artikelAutomat from '../../automats/artikelAutomat';
 import warehouseAutomat from '../../automats/warehouseAutomat';
+import {
+  BORDER,
+  GREEN_BG,
+  GREEN_PANEL,
+  RED_BG,
+  RED_PANEL,
+  SURFACE_BASE,
+  SURFACE_RAISED,
+} from '../../colors';
 
 const REASON_PRESETS = [
   'Inventurdifferenz',
@@ -344,8 +353,8 @@ export default class ArticleStockAdjustDialog extends PureComponent {
               sx={{
                 p: 1.5,
                 borderRadius: 1,
-                backgroundColor: '#f8fafc',
-                border: '1px solid #e2e8f0',
+                backgroundColor: SURFACE_BASE,
+                border: `1px solid ${BORDER}`,
               }}
             >
               <Typography variant="caption" color="text.secondary" display="block">
@@ -361,8 +370,8 @@ export default class ArticleStockAdjustDialog extends PureComponent {
               sx={{
                 p: 1.5,
                 borderRadius: 1,
-                backgroundColor: '#f8fafc',
-                border: '1px solid #e2e8f0',
+                backgroundColor: SURFACE_BASE,
+                border: `1px solid ${BORDER}`,
                 display: 'flex',
                 alignItems: 'center',
                 justifyContent: 'space-between',
@@ -437,8 +446,8 @@ export default class ArticleStockAdjustDialog extends PureComponent {
                       p: 1,
                       px: 2,
                       borderRadius: 1,
-                      backgroundColor: '#f1f5f9',
-                      border: '1px solid #e2e8f0',
+                      backgroundColor: SURFACE_RAISED,
+                      border: `1px solid ${BORDER}`,
                       minWidth: 140,
                     }}
                   >
@@ -529,8 +538,8 @@ export default class ArticleStockAdjustDialog extends PureComponent {
                     sx={{
                       p: 1.5,
                       borderRadius: 1,
-                      backgroundColor: amount > 0 ? '#ecfdf5' : '#fef2f2',
-                      border: `1px solid ${amount > 0 ? '#a7f3d0' : '#fecaca'}`,
+                      backgroundColor: amount > 0 ? GREEN_BG : RED_BG,
+                      border: `1px solid ${amount > 0 ? GREEN_PANEL : RED_PANEL}`,
                       display: 'flex',
                       alignItems: 'center',
                       justifyContent: 'space-between',
diff --git a/src/components/article/ArticleTileTab.jsx b/src/components/article/ArticleTileTab.jsx
index 5530311..3885619 100644
--- a/src/components/article/ArticleTileTab.jsx
+++ b/src/components/article/ArticleTileTab.jsx
@@ -31,40 +31,50 @@ import ArticleSeoTab from './tabs/ArticleSeoTab';
 import ArticleSettingsTab from './tabs/ArticleSettingsTab';
 import ArticleSupplierTab from './tabs/ArticleSupplierTab';
 import HelpBadge from '../HelpBadge';
+import {
+  BLUE_PANEL,
+  BORDER,
+  GREEN_PANEL,
+  ORANGE_PANEL,
+  PETROL_PANEL,
+  RED_PANEL,
+  SHADOW_TAB,
+  YELLOW_PANEL,
+} from '../../colors';
 
 const ALWAYS_TABS = [
   {
     id: ARTICLE_TAB.history,
     label: 'History',
-    color: '#fed7aa',
+    color: ORANGE_PANEL,
     Icon: HistoryIcon,
     help: 'Historie aller Änderungen, Buchungen und Ereignisse zu diesem Artikel',
   },
   {
     id: ARTICLE_TAB.supplier,
     label: 'Supplier',
-    color: '#bbf7d0',
+    color: GREEN_PANEL,
     Icon: LocalShippingIcon,
     help: 'Zugeordnete Lieferanten, Einkaufspreise und Lieferanten-Artikelnummern',
   },
   {
     id: ARTICLE_TAB.seo,
     label: 'SEO & Beschreibung',
-    color: '#99f6e4',
+    color: PETROL_PANEL,
     Icon: ManageSearchIcon,
     help: 'Shop-Texte, Beschreibungen und Suchmaschinen-Metadaten',
   },
   {
     id: ARTICLE_TAB.label,
     label: 'Label',
-    color: '#fde68a',
+    color: YELLOW_PANEL,
     Icon: LabelIcon,
     help: 'Barcode- und Preisetiketten für diesen Artikel gestalten und drucken',
   },
   {
     id: ARTICLE_TAB.attributes,
     label: 'Attribute und Merkmale',
-    color: '#bfdbfe',
+    color: BLUE_PANEL,
     Icon: CategoryIcon,
     help: 'Zusatzattribute, technische Merkmale und Filtereigenschaften',
   },
@@ -73,7 +83,7 @@ const ALWAYS_TABS = [
 const SETTINGS_TAB = {
   id: ARTICLE_TAB.settings,
   label: 'Einstellungen',
-  color: '#fca5a5',
+  color: RED_PANEL,
   Icon: SettingsIcon,
   help: 'Artikeleinstellungen, Einheiten, Steuersatz und Löschen',
 };
@@ -220,8 +230,7 @@ class ArticleTileTab extends PureComponent {
           display: 'flex',
           flexDirection: 'column',
           minWidth: 0,
-          filter:
-            'drop-shadow(0px 2px 4px rgba(0,0,0,0.2)) drop-shadow(0px 4px 5px rgba(0,0,0,0.14)) drop-shadow(0px 1px 10px rgba(0,0,0,0.12))',
+          filter: SHADOW_TAB,
         }}
       >
         <Box
@@ -313,7 +322,7 @@ class ArticleTileTab extends PureComponent {
                     },
                     '&.Mui-disabled': {
                       opacity: 0.4,
-                      bgcolor: '#e2e8f0',
+                      bgcolor: BORDER,
                       cursor: 'not-allowed',
                       pointerEvents: 'auto',
                     },
diff --git a/src/components/article/ArticleView.jsx b/src/components/article/ArticleView.jsx
index fd7a98e..20fe1b6 100644
--- a/src/components/article/ArticleView.jsx
+++ b/src/components/article/ArticleView.jsx
@@ -16,6 +16,9 @@ import ArticleViewBrand from './boxes/ArticleViewBrand';
 import ArticleViewEANs from './boxes/ArticleViewEANs';
 import ArticleViewPrice from './boxes/ArticleViewPrice';
 import ArticleViewLists from './boxes/ArticleViewLists';
+import {
+  YELLOW_PANEL,
+} from '../../colors';
 
 /** Stable prop so PureComponent photo tile does not see a new sx each render. */
 const PHOTO_TILE_SX = { minHeight: 0 };
@@ -93,7 +96,7 @@ class ArticleView extends PureComponent {
 
         <ArticlePhotoTile
           wide={1}
-          color="#fde68a"
+          color={YELLOW_PANEL}
           sx={PHOTO_TILE_SX}
           article={article}
         />
diff --git a/src/components/article/boxes/ArticleViewBrand.jsx b/src/components/article/boxes/ArticleViewBrand.jsx
index 879baa4..c3285a6 100644
--- a/src/components/article/boxes/ArticleViewBrand.jsx
+++ b/src/components/article/boxes/ArticleViewBrand.jsx
@@ -10,6 +10,9 @@ import { requireObject } from '../../../utils/apiShape';
 import { notifyError } from '../../../utils/notify';
 import InputAdornment from '@mui/material/InputAdornment';
 import { BrandLabel, BrandThumb } from '../../brand';
+import {
+  PURPLE_BG,
+} from '../../../colors';
 
 class PanelValue extends Component {
   render() {
@@ -174,7 +177,7 @@ export default class ArticleViewBrand extends PureComponent {
         title="Marke"
         wide={1}
         minHeight={SECOND_ROW_MIN_HEIGHT}
-        color="#e9d5ff"
+        color={PURPLE_BG}
         contentAlignItems="flex-start"
         value={value}
         onSave={this.handleSave}
diff --git a/src/components/article/boxes/ArticleViewEANs.jsx b/src/components/article/boxes/ArticleViewEANs.jsx
index 4d4c880..c757db9 100644
--- a/src/components/article/boxes/ArticleViewEANs.jsx
+++ b/src/components/article/boxes/ArticleViewEANs.jsx
@@ -9,6 +9,10 @@ import { requireObject } from '../../../utils/apiShape';
 import { articleEans } from '../../../utils/articleDetail';
 import { notifyError } from '../../../utils/notify';
 import JsBarcode from 'jsbarcode';
+import {
+  BORDER,
+  INK,
+} from '../../../colors';
 class PanelValue extends Component {
   render() {
     const { label, children } = this.props;
@@ -61,7 +65,7 @@ class SkuBarcode extends PureComponent {
         displayValue: false,
         margin: 0,
         background: 'transparent',
-        lineColor: '#1e293b',
+        lineColor: INK,
       });
     } catch (e) {
       console.warn('Barcode render error:', e);
@@ -151,7 +155,7 @@ export default class ArticleViewEANs extends PureComponent {
         title={articleData.sku}
         wide={1}
         minHeight={SECOND_ROW_MIN_HEIGHT}
-        color="#e2e8f0"
+        color={BORDER}
         contentAlignItems="flex-start"
         value={value}
         onSave={this.handleSave}
diff --git a/src/components/article/boxes/ArticleViewLists.jsx b/src/components/article/boxes/ArticleViewLists.jsx
index a7aa5df..e6bd8ab 100644
--- a/src/components/article/boxes/ArticleViewLists.jsx
+++ b/src/components/article/boxes/ArticleViewLists.jsx
@@ -36,6 +36,10 @@ import attributeAutomat, { selectAttributes } from '../../../automats/attributeA
 import artikelAutomat, { getArticle } from '../../../automats/artikelAutomat';
 import { notifyError } from '../../../utils/notify';
 import articleIndexAutomat from '../../../automats/articleIndexAutomat';
+import {
+  MAGENTA_PANEL,
+  SHADOW_CARD,
+} from '../../../colors';
 
 export default class ArticleViewLists extends PureComponent {
   constructor(props) {
@@ -1157,7 +1161,7 @@ export default class ArticleViewLists extends PureComponent {
               transition: 'all 0.15s ease-in-out',
               '&:hover': {
                 borderColor: 'primary.main',
-                boxShadow: '0 1px 4px rgba(0,0,0,0.06)',
+                boxShadow: SHADOW_CARD,
               },
             }}
           >
@@ -1245,7 +1249,7 @@ export default class ArticleViewLists extends PureComponent {
                     transition: 'all 0.15s ease-in-out',
                     '&:hover': {
                       borderColor: 'primary.main',
-                      boxShadow: '0 1px 4px rgba(0,0,0,0.06)',
+                      boxShadow: SHADOW_CARD,
                     },
                   }}
                 >
@@ -1465,7 +1469,7 @@ export default class ArticleViewLists extends PureComponent {
     const parentArticle = parentSku ? getArticle(parentSku) : null;
 
     return (
-      <PanelTile wide={1} minHeight={200} color="#fbcfe8">
+      <PanelTile wide={1} minHeight={200} color={MAGENTA_PANEL}>
         <Box sx={{ display: 'flex', flexDirection: 'column', height: '100%', gap: 1 }}>
           {/* ── Mode 1: Parent Article ──────────────────────────────────────── */}
           {isParent ? (
@@ -1640,7 +1644,7 @@ export default class ArticleViewLists extends PureComponent {
                         transition: 'all 0.15s ease-in-out',
                         '&:hover': {
                           borderColor: 'primary.main',
-                          boxShadow: '0 1px 4px rgba(0,0,0,0.06)',
+                          boxShadow: SHADOW_CARD,
                         },
                       }}
                     >
diff --git a/src/components/article/boxes/ArticleViewName.jsx b/src/components/article/boxes/ArticleViewName.jsx
index 6b783ce..6273266 100644
--- a/src/components/article/boxes/ArticleViewName.jsx
+++ b/src/components/article/boxes/ArticleViewName.jsx
@@ -8,6 +8,9 @@ import { Box, Chip, IconButton } from '@mui/material';
 import AddIcon from '@mui/icons-material/Add';
 import CategoryPickerDialog from '../CategoryPickerDialog';
 import { notifyError } from '../../../utils/notify';
+import {
+  WHITE,
+} from '../../../colors';
 
 const articleNameTextSx = {
   fontWeight: 700,
@@ -327,7 +330,7 @@ export default class ArticleViewName extends PureComponent {
         wide={3}
         minHeight={0}
         sx={headerTileSx}
-        color="#ffffff"
+        color={WHITE}
         value={value}
         onSave={this.handleSave}
         onError={notifyError}
diff --git a/src/components/article/boxes/ArticleViewPrice.jsx b/src/components/article/boxes/ArticleViewPrice.jsx
index 37571e3..a0bbd0b 100644
--- a/src/components/article/boxes/ArticleViewPrice.jsx
+++ b/src/components/article/boxes/ArticleViewPrice.jsx
@@ -31,6 +31,10 @@ import { notifyError } from '../../../utils/notify';
 import { PriceTaxRow } from './PriceTaxRow';
 import TierPricePills from './TierPricePills';
 import { PriceUnitRow, PriceUnitCorner } from './PriceUnitRow';
+import {
+  BLUE_PANEL,
+  BORDER,
+} from '../../../colors';
 
 const SECOND_ROW_MIN_HEIGHT = 220;
 
@@ -481,7 +485,7 @@ export default class ArticleViewPrice extends PureComponent {
         <PanelTile
           wide={1}
           minHeight={SECOND_ROW_MIN_HEIGHT}
-          color="#e2e8f0"
+          color={BORDER}
           contentAlignItems="flex-start"
         >
           <Box sx={{ display: 'flex', flexDirection: 'column', height: '100%', width: '100%' }}>
@@ -533,7 +537,7 @@ export default class ArticleViewPrice extends PureComponent {
       <EditablePanelTile
         wide={1}
         minHeight={SECOND_ROW_MIN_HEIGHT}
-        color="#bfdbfe"
+        color={BLUE_PANEL}
         contentAlignItems="flex-start"
         value={priceValue}
         onSave={this.handleSave}
diff --git a/src/components/article/boxes/ArticleViewStock.jsx b/src/components/article/boxes/ArticleViewStock.jsx
index ada102b..0deb8bc 100644
--- a/src/components/article/boxes/ArticleViewStock.jsx
+++ b/src/components/article/boxes/ArticleViewStock.jsx
@@ -7,6 +7,14 @@ import Tooltip from '@mui/material/Tooltip';
 import { PanelTile } from 'dashgui/panels';
 import { formatStock } from '../searchFormat';
 import ArticleStockAdjustDialog from '../ArticleStockAdjustDialog';
+import {
+  BORDER,
+  GREEN_PANEL,
+  PETROL_PANEL,
+  SORT_GHOST_BG,
+  TINT_ROW_HOVER,
+  VEIL_PANEL,
+} from '../../../colors';
 
 const SECOND_ROW_MIN_HEIGHT = 220;
 
@@ -66,7 +74,7 @@ export default class ArticleViewStock extends PureComponent {
         <PanelTile
           wide={1}
           minHeight={SECOND_ROW_MIN_HEIGHT}
-          color={isParent ? '#e2e8f0' : isStueckliste ? '#cffafe' : '#bbf7d0'}
+          color={isParent ? BORDER : isStueckliste ? PETROL_PANEL : GREEN_PANEL}
           action={
             isParent || isStueckliste
               ? null
@@ -171,7 +179,7 @@ export default class ArticleViewStock extends PureComponent {
                       mx: -0.5,
                       transition: 'background-color 0.15s ease',
                       '&:hover': {
-                        backgroundColor: 'rgba(0, 0, 0, 0.05)',
+                        backgroundColor: TINT_ROW_HOVER,
                       },
                     }}
                   >
@@ -209,7 +217,7 @@ export default class ArticleViewStock extends PureComponent {
                     mx: -0.5,
                     transition: 'background-color 0.15s ease',
                     '&:hover': {
-                      backgroundColor: 'rgba(0, 0, 0, 0.05)',
+                      backgroundColor: TINT_ROW_HOVER,
                     },
                   }}
                 >
@@ -246,7 +254,7 @@ export default class ArticleViewStock extends PureComponent {
                   pr: 0.5,
                   '&::-webkit-scrollbar': { width: 4 },
                   '&::-webkit-scrollbar-thumb': {
-                    backgroundColor: 'rgba(0, 0, 0, 0.15)',
+                    backgroundColor: SORT_GHOST_BG,
                     borderRadius: 2,
                   },
                 }}
@@ -262,7 +270,7 @@ export default class ArticleViewStock extends PureComponent {
                         py: 0.35,
                         px: 0.75,
                         borderRadius: 1,
-                        backgroundColor: 'rgba(255, 255, 255, 0.55)',
+                        backgroundColor: VEIL_PANEL,
                       }}
                     >
                       <Box
diff --git a/src/components/article/boxes/PriceTaxRow.jsx b/src/components/article/boxes/PriceTaxRow.jsx
index 6c7b35b..0a287c6 100644
--- a/src/components/article/boxes/PriceTaxRow.jsx
+++ b/src/components/article/boxes/PriceTaxRow.jsx
@@ -3,6 +3,11 @@ import Box from '@mui/material/Box';
 import Chip from '@mui/material/Chip';
 import IconButton from '@mui/material/IconButton';
 import LayersOutlinedIcon from '@mui/icons-material/LayersOutlined';
+import {
+  TINT_CHIP,
+  TINT_PILL_ACTIVE,
+  TINT_STRONG,
+} from '../../../colors';
 
 const taxPillSx = {
   height: 28,
@@ -27,12 +32,12 @@ export class TaxRatePills extends Component {
               sx={{
                 ...taxPillSx,
                 visibility: active || !readOnly ? 'visible' : 'hidden',
-                bgcolor: active ? 'rgba(0, 0, 0, 0.14)' : 'rgba(0, 0, 0, 0.06)',
+                bgcolor: active ? TINT_PILL_ACTIVE : TINT_CHIP,
                 ...(readOnly
                   ? {}
                   : {
                       cursor: 'pointer',
-                      '&:hover': { bgcolor: 'rgba(0, 0, 0, 0.12)' },
+                      '&:hover': { bgcolor: TINT_STRONG },
                     }),
               }}
             />
diff --git a/src/components/article/boxes/PriceUnitRow.jsx b/src/components/article/boxes/PriceUnitRow.jsx
index 7768778..72ed9da 100644
--- a/src/components/article/boxes/PriceUnitRow.jsx
+++ b/src/components/article/boxes/PriceUnitRow.jsx
@@ -10,6 +10,9 @@ import StraightenOutlinedIcon from '@mui/icons-material/StraightenOutlined';
 import Switch from '@mui/material/Switch';
 import TextInput from '../../TextInput';
 import { findUnitBySi, unitLabel } from '../../../utils/units';
+import {
+  TINT_PILL,
+} from '../../../colors';
 
 const priceUnitCornerSx = {
   position: 'absolute',
@@ -49,7 +52,7 @@ export class PriceUnitRow extends Component {
                 height: 28,
                 fontSize: 13,
                 fontWeight: 600,
-                bgcolor: 'rgba(0, 0, 0, 0.08)',
+                bgcolor: TINT_PILL,
               }}
             />
           ) : null}
diff --git a/src/components/article/boxes/TierPricePills.jsx b/src/components/article/boxes/TierPricePills.jsx
index 340b2f9..20a292e 100644
--- a/src/components/article/boxes/TierPricePills.jsx
+++ b/src/components/article/boxes/TierPricePills.jsx
@@ -2,6 +2,9 @@ import { Component } from 'react';
 import Box from '@mui/material/Box';
 import Chip from '@mui/material/Chip';
 import { formatPrice, parsePriceInput } from '../../../utils/price';
+import {
+  TINT_PILL,
+} from '../../../colors';
 
 const tierPillSx = {
   height: 22,
@@ -24,7 +27,7 @@ export default class TierPricePills extends Component {
               label={`ab ${tier.minmultiplier} · ${formatPrice(gross)}`}
               sx={{
                 ...tierPillSx,
-                bgcolor: 'rgba(0, 0, 0, 0.08)',
+                bgcolor: TINT_PILL,
               }}
             />
           );
diff --git a/src/components/article/tabs/ArticleHistoryTab.jsx b/src/components/article/tabs/ArticleHistoryTab.jsx
index f715ede..6f8154c 100644
--- a/src/components/article/tabs/ArticleHistoryTab.jsx
+++ b/src/components/article/tabs/ArticleHistoryTab.jsx
@@ -15,6 +15,21 @@ function formatDate(iso) {
   return new Date(iso).toLocaleString('de-DE');
 }
 
+import {
+  SCRIM_SOFT,
+} from '../../../colors';
+
+const HISTORY_DATE_CELL_BORDER = `1px solid ${SCRIM_SOFT}`;
+
+const dateDividerSx = {
+  borderBottom: HISTORY_DATE_CELL_BORDER,
+};
+
+const dateCellSx = {
+  borderBottom: HISTORY_DATE_CELL_BORDER,
+  verticalAlign: 'middle',
+};
+
 export default class ArticleHistoryTab extends PureComponent {
   constructor(props) {
     super(props);
@@ -94,7 +109,7 @@ export default class ArticleHistoryTab extends PureComponent {
           <TableRow>
             <TableCell
               sx={{
-                borderBottom: '1px solid rgba(0, 0, 0, 0.35)',
+                ...dateDividerSx,
                 width: '1%',
                 whiteSpace: 'nowrap',
                 verticalAlign: 'middle',
@@ -103,10 +118,7 @@ export default class ArticleHistoryTab extends PureComponent {
               Datum
             </TableCell>
             <TableCell
-              sx={{
-                borderBottom: '1px solid rgba(0, 0, 0, 0.35)',
-                verticalAlign: 'middle',
-              }}
+              sx={dateCellSx}
             >
               {showPagination ? (
                 <ResultsPagination
diff --git a/src/components/article/tabs/ArticleSupplierTab.jsx b/src/components/article/tabs/ArticleSupplierTab.jsx
index 11547fc..affad7e 100644
--- a/src/components/article/tabs/ArticleSupplierTab.jsx
+++ b/src/components/article/tabs/ArticleSupplierTab.jsx
@@ -28,6 +28,10 @@ import { articleSupplierAutomat } from '../../../automats/articleDetailAutomat';
 import sseAutomat from '../../../automats/sseAutomat';
 import companyAutomat from '../../../automats/companyAutomat';
 import ArticleSupplierDialog from '../ArticleSupplierDialog';
+import {
+  SORT_GHOST_BG,
+  TINT_FAINT,
+} from '../../../colors';
 
 export default class ArticleSupplierTab extends PureComponent {
   constructor(props) {
@@ -218,8 +222,8 @@ export default class ArticleSupplierTab extends PureComponent {
             py: 6,
             px: 2,
             borderRadius: 2,
-            border: '1px dashed rgba(0, 0, 0, 0.15)',
-            bgcolor: 'rgba(0, 0, 0, 0.01)',
+            border: `1px dashed ${SORT_GHOST_BG}`,
+            bgcolor: TINT_FAINT,
             textAlign: 'center',
           }}
         >
@@ -286,8 +290,8 @@ export default class ArticleSupplierTab extends PureComponent {
               py: 6,
               px: 2,
               borderRadius: 2,
-              border: '1px dashed rgba(0, 0, 0, 0.15)',
-              bgcolor: 'rgba(0, 0, 0, 0.01)',
+              border: `1px dashed ${SORT_GHOST_BG}`,
+              bgcolor: TINT_FAINT,
               textAlign: 'center',
             }}
           >
diff --git a/src/components/brand/BrandImageSearchDialog.jsx b/src/components/brand/BrandImageSearchDialog.jsx
index 556f5e3..b994dd5 100644
--- a/src/components/brand/BrandImageSearchDialog.jsx
+++ b/src/components/brand/BrandImageSearchDialog.jsx
@@ -27,6 +27,14 @@ import { enqueueSnackbar } from 'notistack';
 import { serper } from '../../api';
 import brandAutomat from '../../automats/brandAutomat';
 import { downloadAndPrepareLogoAvif } from '../../utils/cropLogo';
+import {
+  CHECKERBOARD,
+  INFO_RIBBON,
+  SCRIM_LABEL,
+  VEIL_CARD_STRONG,
+  VEIL_OVERLAY,
+  WHITE,
+} from '../../colors';
 
 /**
  * Dialog that searches Google Images via Serper.dev SSE stream for a brand logo.
@@ -420,9 +428,8 @@ export default class BrandImageSearchDialog extends PureComponent {
                       overflow: 'hidden',
                       border: '1px solid',
                       borderColor: isThisProcessing ? 'primary.main' : 'divider',
-                      bgcolor: '#fff',
-                      backgroundImage:
-                        'linear-gradient(45deg, #f0f0f0 25%, transparent 25%), linear-gradient(-45deg, #f0f0f0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #f0f0f0 75%), linear-gradient(-45deg, transparent 75%, #f0f0f0 75%)',
+                      bgcolor: WHITE,
+                      backgroundImage: CHECKERBOARD,
                       backgroundSize: '16px 16px',
                       backgroundPosition: '0 0, 0 8px, 8px -8px, -8px 0px',
                       cursor: processingId ? 'default' : 'pointer',
@@ -484,8 +491,8 @@ export default class BrandImageSearchDialog extends PureComponent {
                           height: 16,
                           fontSize: '0.62rem',
                           fontWeight: 600,
-                          bgcolor: 'rgba(0, 0, 0, 0.65)',
-                          color: '#fff',
+                          bgcolor: SCRIM_LABEL,
+                          color: WHITE,
                           pointerEvents: 'none',
                           px: 0.25,
                         }}
@@ -503,9 +510,9 @@ export default class BrandImageSearchDialog extends PureComponent {
                           right: 0,
                           py: 0.6,
                           px: 0.8,
-                          bgcolor: 'rgba(25, 118, 210, 0.92)',
+                          bgcolor: INFO_RIBBON,
                           backdropFilter: 'blur(3px)',
-                          color: '#fff',
+                          color: WHITE,
                           display: 'flex',
                           alignItems: 'center',
                           justifyContent: 'center',
@@ -532,7 +539,7 @@ export default class BrandImageSearchDialog extends PureComponent {
                         sx={{
                           position: 'absolute',
                           inset: 0,
-                          bgcolor: 'rgba(255, 255, 255, 0.92)',
+                          bgcolor: VEIL_OVERLAY,
                           backdropFilter: 'blur(3px)',
                           display: 'flex',
                           flexDirection: 'column',
@@ -578,9 +585,9 @@ export default class BrandImageSearchDialog extends PureComponent {
                             onClick={(e) => this.handleCopyUrl(img.url, e)}
                             sx={{
                               p: 0.5,
-                              bgcolor: 'rgba(255, 255, 255, 0.9)',
+                              bgcolor: VEIL_CARD_STRONG,
                               boxShadow: 1,
-                              '&:hover': { bgcolor: '#fff' },
+                              '&:hover': { bgcolor: WHITE },
                             }}
                           >
                             <ContentCopyIcon sx={{ fontSize: 14, color: 'text.primary' }} />
@@ -592,9 +599,9 @@ export default class BrandImageSearchDialog extends PureComponent {
                             onClick={(e) => this.handleOpenUrl(img.url, e)}
                             sx={{
                               p: 0.5,
-                              bgcolor: 'rgba(255, 255, 255, 0.9)',
+                              bgcolor: VEIL_CARD_STRONG,
                               boxShadow: 1,
-                              '&:hover': { bgcolor: '#fff' },
+                              '&:hover': { bgcolor: WHITE },
                             }}
                           >
                             <OpenInNewIcon sx={{ fontSize: 14, color: 'text.primary' }} />
diff --git a/src/components/brand/BrandThumb.jsx b/src/components/brand/BrandThumb.jsx
index 850d836..0ac385c 100644
--- a/src/components/brand/BrandThumb.jsx
+++ b/src/components/brand/BrandThumb.jsx
@@ -1,6 +1,10 @@
 import Box from '@mui/material/Box';
 import ThumbHashImage, { getThumbHashDimensions } from '../article/ThumbHashImage';
 import brandAutomat from '../../automats/brandAutomat';
+import {
+  SHADOW_THUMB_RING,
+  TINT_ROW_HOVER,
+} from '../../colors';
 
 /**
  * Extracts thumbHash from various brand representations:
@@ -97,8 +101,8 @@ export default function BrandThumb({
         overflow: 'hidden',
         flexShrink: 0,
         verticalAlign: 'middle',
-        bgcolor: 'rgba(0, 0, 0, 0.05)',
-        boxShadow: '0 0 0 1px rgba(0, 0, 0, 0.12)',
+        bgcolor: TINT_ROW_HOVER,
+        boxShadow: SHADOW_THUMB_RING,
         ...sx,
       }}
     >
diff --git a/src/components/chat/AskUserPrompt.jsx b/src/components/chat/AskUserPrompt.jsx
index 9de0fac..0a136b9 100644
--- a/src/components/chat/AskUserPrompt.jsx
+++ b/src/components/chat/AskUserPrompt.jsx
@@ -2,9 +2,14 @@ import React, { useState } from 'react';
 import Box from '@mui/material/Box';
 import Typography from '@mui/material/Typography';
 import Button from '@mui/material/Button';
-import TextField from '@mui/material/TextField';
+import TextInput from '../TextInput';
 import HelpOutlineRoundedIcon from '@mui/icons-material/HelpOutlineRounded';
 import SendRoundedIcon from '@mui/icons-material/SendRounded';
+import {
+  ASK_PROMPT_BG_PAIR,
+  ASK_PROMPT_BORDER_PAIR,
+  byMode,
+} from '../../colors';
 
 export default function AskUserPrompt({ askData, onAnswer, disabled = false }) {
   const { toolCallId, question, options = [] } = askData;
@@ -30,8 +35,8 @@ export default function AskUserPrompt({ askData, onAnswer, disabled = false }) {
         my: 1,
         p: 2,
         borderRadius: 3,
-        bgcolor: theme.palette.mode === 'dark' ? 'rgba(59, 91, 219, 0.12)' : '#eef2ff',
-        border: `1px solid ${theme.palette.mode === 'dark' ? 'rgba(59, 91, 219, 0.3)' : '#c7d2fe'}`,
+        bgcolor: byMode(theme, ASK_PROMPT_BG_PAIR),
+        border: `1px solid ${byMode(theme, ASK_PROMPT_BORDER_PAIR)}`,
         display: 'flex',
         flexDirection: 'column',
         gap: 1.5,
@@ -97,28 +102,13 @@ export default function AskUserPrompt({ askData, onAnswer, disabled = false }) {
             onSubmit={handleCustomSubmit}
             sx={{ display: 'flex', gap: 1, mt: 0.5, alignItems: 'center' }}
           >
-            <TextField
-              size="small"
+            <TextInput
               fullWidth
               autoFocus
               placeholder="Antwort eingeben…"
               value={customAnswer}
               onChange={(e) => setCustomAnswer(e.target.value)}
               disabled={disabled}
-              slotProps={{
-                htmlInput: {
-                  spellCheck: false,
-                  autoCorrect: 'off',
-                  autoCapitalize: 'off',
-                },
-              }}
-              sx={{
-                '& .MuiOutlinedInput-root': {
-                  borderRadius: 2,
-                  bgcolor: 'background.paper',
-                  fontSize: '0.82rem',
-                },
-              }}
             />
             <Button
               type="submit"
diff --git a/src/components/chat/ChatDrawer.jsx b/src/components/chat/ChatDrawer.jsx
index 2dcbdfa..8a3bfb5 100644
--- a/src/components/chat/ChatDrawer.jsx
+++ b/src/components/chat/ChatDrawer.jsx
@@ -4,7 +4,7 @@ import Box from '@mui/material/Box';
 import Typography from '@mui/material/Typography';
 import IconButton from '@mui/material/IconButton';
 import Button from '@mui/material/Button';
-import TextField from '@mui/material/TextField';
+import TextInput from '../TextInput';
 import MenuItem from '@mui/material/MenuItem';
 import Select from '@mui/material/Select';
 import FormControl from '@mui/material/FormControl';
@@ -20,6 +20,10 @@ import chatAutomat, { selectPendingAskUser } from '../../automats/chatAutomat';
 import userSettingsAutomat from '../../automats/userSettingsAutomat';
 import ChatFlowList from './ChatFlowList';
 import AskUserPrompt from './AskUserPrompt';
+import {
+  BLUE_GLOW,
+  SHADOW_DRAWER,
+} from '../../colors';
 
 const DEFAULT_DRAWER_WIDTH = 460;
 const MIN_DRAWER_WIDTH = 320;
@@ -489,11 +493,10 @@ export default class ChatDrawer extends PureComponent {
         )}
 
         <Box sx={{ display: 'flex', alignItems: 'flex-end', gap: 1 }}>
-          <TextField
+          <TextInput
             inputRef={this.inputRef}
             multiline
             maxRows={4}
-            size="small"
             fullWidth
             value={inputText}
             onChange={(e) => this.setState({ inputText: e.target.value })}
@@ -502,22 +505,8 @@ export default class ChatDrawer extends PureComponent {
             placeholder={
               pendingAsk
                 ? 'Bitte Frage oben beantworten…'
-                : 'Nachricht eingeben… (Enter)'
+                : 'Nachricht eingeben…'
             }
-            slotProps={{
-              htmlInput: {
-                spellCheck: false,
-                autoCorrect: 'off',
-                autoCapitalize: 'off',
-              },
-            }}
-            sx={{
-              '& .MuiOutlinedInput-root': {
-                borderRadius: 2.5,
-                bgcolor: 'background.default',
-                fontSize: '0.875rem',
-              },
-            }}
           />
 
           <IconButton
@@ -576,7 +565,7 @@ export default class ChatDrawer extends PureComponent {
               maxWidth: '100vw',
               display: 'flex',
               flexDirection: 'column',
-              boxShadow: '-8px 0 32px rgba(0, 0, 0, 0.12)',
+              boxShadow: SHADOW_DRAWER,
               position: 'fixed',
               overflow: 'visible',
               transition: isResizing ? 'none !important' : undefined,
@@ -592,7 +581,7 @@ export default class ChatDrawer extends PureComponent {
                 maxWidth: '100vw',
                 display: 'flex',
                 flexDirection: 'column',
-                boxShadow: '-8px 0 32px rgba(0, 0, 0, 0.12)',
+                boxShadow: SHADOW_DRAWER,
                 position: 'fixed',
                 overflow: 'visible',
                 transition: isResizing ? 'none !important' : undefined,
@@ -625,7 +614,7 @@ export default class ChatDrawer extends PureComponent {
                 height: 56,
                 width: 4,
                 opacity: 1,
-                boxShadow: '0 0 10px rgba(59, 91, 219, 0.6)',
+                boxShadow: `0 0 10px ${BLUE_GLOW}`,
               },
             }}
           >
@@ -638,7 +627,7 @@ export default class ChatDrawer extends PureComponent {
                 bgcolor: isResizing ? 'primary.main' : 'divider',
                 opacity: isResizing ? 1 : 0.6,
                 transition: 'background-color 0.15s, height 0.15s, width 0.15s, opacity 0.15s, box-shadow 0.15s',
-                boxShadow: isResizing ? '0 0 10px rgba(59, 91, 219, 0.6)' : 'none',
+                boxShadow: isResizing ? `0 0 10px ${BLUE_GLOW}` : 'none',
               }}
             />
           </Box>
diff --git a/src/components/chat/ChatFab.jsx b/src/components/chat/ChatFab.jsx
index f39593f..bdcf206 100644
--- a/src/components/chat/ChatFab.jsx
+++ b/src/components/chat/ChatFab.jsx
@@ -10,6 +10,15 @@ import AutoAwesomeRoundedIcon from '@mui/icons-material/AutoAwesomeRounded';
 import HelpOutlineRoundedIcon from '@mui/icons-material/HelpOutlineRounded';
 
 import chatAutomat, { selectPendingAskUser, selectHasPendingAsk } from '../../automats/chatAutomat';
+import {
+  CHAT_BUSY,
+  CHAT_FAB_BUSY,
+  CHAT_FAB_PENDING,  CHAT_FAB_SHADOW_BUSY,
+  CHAT_FAB_SHADOW_IDLE,
+  CHAT_FAB_SHADOW_PENDING,  RED,
+  RED_GLOW,
+  WHITE,
+} from '../../colors';
 
 export default class ChatFab extends PureComponent {
   constructor(props) {
@@ -86,7 +95,7 @@ export default class ChatFab extends PureComponent {
                 right: -8,
                 bottom: -8,
                 borderRadius: '50%',
-                bgcolor: '#f59e0b',
+                bgcolor: CHAT_BUSY,
                 opacity: 0.5,
                 animation: 'fabAskPulse 1.5s cubic-bezier(0.4, 0, 0.6, 1) infinite',
                 '@keyframes fabAskPulse': {
@@ -129,7 +138,7 @@ export default class ChatFab extends PureComponent {
                 position: 'absolute',
                 top: -6,
                 left: -6,
-                color: '#f59e0b',
+                color: CHAT_BUSY,
                 pointerEvents: 'none',
               }}
             />
@@ -146,14 +155,14 @@ export default class ChatFab extends PureComponent {
               sx={{
                 '& .MuiBadge-badge': hasPendingAsk
                   ? {
-                      bgcolor: '#ef4444',
-                      color: '#ffffff',
+                      bgcolor: RED,
+                      color: WHITE,
                       fontWeight: 900,
                       fontSize: '0.85rem',
                       minWidth: 22,
                       height: 22,
                       borderRadius: '50%',
-                      boxShadow: '0 2px 10px rgba(239, 68, 68, 0.6)',
+                      boxShadow: `0 2px 10px ${RED_GLOW}`,
                       animation: 'badgePop 1.5s ease infinite',
                       '@keyframes badgePop': {
                         '0%, 100%': { transform: 'scale(1)' },
@@ -171,10 +180,10 @@ export default class ChatFab extends PureComponent {
                   width: 54,
                   height: 54,
                   boxShadow: hasPendingAsk
-                    ? '0 8px 24px rgba(245, 158, 11, 0.45)'
+                    ? CHAT_FAB_SHADOW_PENDING
                     : isBusy
-                    ? '0 8px 24px rgba(245, 158, 11, 0.35)'
-                    : '0 8px 24px rgba(59, 91, 219, 0.35)',
+                    ? CHAT_FAB_SHADOW_BUSY
+                    : CHAT_FAB_SHADOW_IDLE,
                   transition: 'transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.2s',
                   '&:hover': {
                     transform: 'scale(1.06)',
@@ -183,9 +192,9 @@ export default class ChatFab extends PureComponent {
                     transform: 'scale(0.96)',
                   },
                   background: hasPendingAsk
-                    ? 'linear-gradient(135deg, #f59e0b 0%, #ea580c 100%)'
+                    ? CHAT_FAB_PENDING
                     : isBusy
-                    ? 'linear-gradient(135deg, #f59e0b 0%, #d97706 100%)'
+                    ? CHAT_FAB_BUSY
                     : `linear-gradient(135deg, ${theme.palette.primary.main} 0%, ${theme.palette.primary.dark} 100%)`,
                 })}
               >
diff --git a/src/components/chat/ChatFlowList.jsx b/src/components/chat/ChatFlowList.jsx
index 1b08f2f..e8010fb 100644
--- a/src/components/chat/ChatFlowList.jsx
+++ b/src/components/chat/ChatFlowList.jsx
@@ -2,6 +2,13 @@ import React, { PureComponent, createRef } from 'react';
 import Box from '@mui/material/Box';
 import Typography from '@mui/material/Typography';
 import HealingMarkdown from './HealingMarkdown';
+import {
+  SHADOW_BUBBLE_ASSISTANT,
+  SHADOW_BUBBLE_USER,
+  SURFACE_RAISED,
+  SURFACE_SUBTLE_PAIR,
+  byMode,
+} from '../../colors';
 
 function formatMessageTime(isoString) {
   if (!isoString) return '';
@@ -109,7 +116,7 @@ function MessageRow({ msg, showTime = true }) {
       <Box sx={{ display: 'flex', justifyContent: 'flex-start', py: 0.35, px: 2 }}>
         <Box
           sx={(theme) => ({
-            bgcolor: theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.04)' : 'rgba(0,0,0,0.03)',
+            bgcolor: byMode(theme, SURFACE_SUBTLE_PAIR),
             color: 'text.secondary',
             px: 1.25,
             py: 0.35,
@@ -193,7 +200,7 @@ function MessageRow({ msg, showTime = true }) {
       <Box sx={{ display: 'flex', justifyContent: 'flex-start', py: 0.35, px: 2 }}>
         <Box
           sx={(theme) => ({
-            bgcolor: theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.04)' : 'rgba(0,0,0,0.03)',
+            bgcolor: byMode(theme, SURFACE_SUBTLE_PAIR),
             color: 'text.secondary',
             px: 1.25,
             py: 0.35,
@@ -272,13 +279,13 @@ function MessageRow({ msg, showTime = true }) {
               ? theme.palette.primary.main
               : theme.palette.mode === 'dark'
                 ? 'background.paper'
-                : '#f4f6f8',
+                : SURFACE_RAISED,
             color: isUser
               ? theme.palette.primary.contrastText
               : theme.palette.text.primary,
             boxShadow: isUser
-              ? '0 2px 8px rgba(59, 91, 219, 0.25)'
-              : '0 1px 4px rgba(0, 0, 0, 0.05)',
+              ? SHADOW_BUBBLE_USER
+              : SHADOW_BUBBLE_ASSISTANT,
             border: isUser ? 'none' : `1px solid ${theme.palette.divider}`,
             wordBreak: 'break-word',
             whiteSpace: isUser ? 'pre-wrap' : 'normal',
diff --git a/src/components/chat/HealingMarkdown.jsx b/src/components/chat/HealingMarkdown.jsx
index 957e9a1..f3a9bfa 100644
--- a/src/components/chat/HealingMarkdown.jsx
+++ b/src/components/chat/HealingMarkdown.jsx
@@ -1,5 +1,12 @@
 import React, { memo, useState } from 'react';
 import Box from '@mui/material/Box';
+import {
+  CODE_BLOCK_PAIR,
+  CODE_INLINE_PAIR,
+  SURFACE_SUBTLE_PAIR,
+  TABLE_HEADER_PAIR,
+  byMode,
+} from '../../colors';
 
 /**
  * Healing markdown renderer.
@@ -336,7 +343,7 @@ const rootSx = (theme) => ({
     fontSize: '0.82em',
     px: 0.5,
     borderRadius: 0.75,
-    bgcolor: theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.08)' : 'rgba(0,0,0,0.06)',
+bbox: byMode(theme, CODE_INLINE_PAIR),
   },
   '& pre': {
     m: 0,
@@ -344,7 +351,7 @@ const rootSx = (theme) => ({
     p: 1.25,
     borderRadius: 1.5,
     overflowX: 'auto',
-    bgcolor: theme.palette.mode === 'dark' ? 'rgba(0,0,0,0.35)' : 'rgba(0,0,0,0.06)',
+    bgcolor: byMode(theme, CODE_BLOCK_PAIR),
   },
   '& pre code': { p: 0, bgcolor: 'transparent', whiteSpace: 'pre' },
   '& hr': { border: 0, borderTop: `1px solid ${theme.palette.divider}`, my: 1.5 },
@@ -357,7 +364,7 @@ const rootSx = (theme) => ({
     objectFit: 'contain',
     borderRadius: 1.5,
     border: `1px solid ${theme.palette.divider}`,
-    bgcolor: theme.palette.mode === 'dark' ? 'rgba(255,255,255,0.05)' : 'rgba(0,0,0,0.03)',
+bbox: byMode(theme, SURFACE_SUBTLE_PAIR),
   },
   '& .md-image-fallback': {
     display: 'inline-block',
@@ -388,7 +395,7 @@ const rootSx = (theme) => ({
     '&:last-child': { borderRight: 'none' },
   },
   '& th': {
-    bgcolor: theme.palette.mode === 'dark' ? 'rgba(255, 255, 255, 0.05)' : 'rgba(0, 0, 0, 0.04)',
+bbox: byMode(theme, TABLE_HEADER_PAIR),
     fontWeight: 600,
   },
   '& tr:last-child td': {
diff --git a/src/components/chat/NewConversationDialog.jsx b/src/components/chat/NewConversationDialog.jsx
index 755efb3..a7e3e1a 100644
--- a/src/components/chat/NewConversationDialog.jsx
+++ b/src/components/chat/NewConversationDialog.jsx
@@ -4,7 +4,7 @@ import DialogTitle from '@mui/material/DialogTitle';
 import DialogContent from '@mui/material/DialogContent';
 import DialogActions from '@mui/material/DialogActions';
 import Button from '@mui/material/Button';
-import TextField from '@mui/material/TextField';
+import TextInput from '../TextInput';
 import MenuItem from '@mui/material/MenuItem';
 import Box from '@mui/material/Box';
 import Typography from '@mui/material/Typography';
@@ -12,6 +12,9 @@ import CircularProgress from '@mui/material/CircularProgress';
 import AutoAwesomeRoundedIcon from '@mui/icons-material/AutoAwesomeRounded';
 
 import { PRESET_MODELS } from '../../automats/chatAutomat';
+import {
+  SHADOW_DIALOG,
+} from '../../colors';
 
 export default class NewConversationDialog extends PureComponent {
   constructor(props) {
@@ -73,7 +76,7 @@ export default class NewConversationDialog extends PureComponent {
           sx: {
             borderRadius: 3,
             p: 1,
-            boxShadow: '0 20px 40px rgba(0,0,0,0.2)',
+            boxShadow: SHADOW_DIALOG,
           },
         }}
       >
@@ -103,23 +106,21 @@ export default class NewConversationDialog extends PureComponent {
               Wähle das Sprachmodell für die neue Konversation aus.
             </Typography>
 
-            <TextField
+            <TextInput
               label="Provider"
               value={provider}
               onChange={(e) => this.setState({ provider: e.target.value })}
               fullWidth
-              size="small"
               disabled={loading}
               helperText="Standard: openrouter"
             />
 
-            <TextField
+            <TextInput
               select
               label="Modell Vorlage"
               value={isCustom ? '__custom__' : model}
               onChange={this.handleModelChange}
               fullWidth
-              size="small"
               disabled={loading}
             >
               {PRESET_MODELS.map((item) => (
@@ -128,16 +129,15 @@ export default class NewConversationDialog extends PureComponent {
                 </MenuItem>
               ))}
               <MenuItem value="__custom__">Anderes Modell eingeben…</MenuItem>
-            </TextField>
+            </TextInput>
 
             {isCustom && (
-              <TextField
+              <TextInput
                 label="Modell-Bezeichnung"
                 placeholder="z. B. anthropic/claude-3.5-haiku"
                 value={customModel}
                 onChange={(e) => this.setState({ customModel: e.target.value })}
                 fullWidth
-                size="small"
                 autoFocus
                 disabled={loading}
               />
diff --git a/src/components/manifest/ArticleSearchDialog.jsx b/src/components/manifest/ArticleSearchDialog.jsx
index 8b442dc..f1134f5 100644
--- a/src/components/manifest/ArticleSearchDialog.jsx
+++ b/src/components/manifest/ArticleSearchDialog.jsx
@@ -23,6 +23,9 @@ import LinkIcon from '@mui/icons-material/Link';
 import articleIndexAutomat from '../../automats/articleIndexAutomat';
 import ArticlePhoto from '../article/ArticlePhoto';
 import { BrandLabel } from '../brand';
+import {
+  BORDER,
+} from '../../colors';
 
 export default class ArticleSearchDialog extends PureComponent {
   constructor(props) {
@@ -250,7 +253,7 @@ export default class ArticleSearchDialog extends PureComponent {
                           height: 34,
                           borderRadius: 0.75,
                           overflow: 'hidden',
-                          bgcolor: '#e2e8f0',
+                          bgcolor: BORDER,
                           display: 'flex',
                           alignItems: 'center',
                           justifyContent: 'center',
diff --git a/src/components/manifest/Attachment.jsx b/src/components/manifest/Attachment.jsx
index e8e894f..2706eb2 100644
--- a/src/components/manifest/Attachment.jsx
+++ b/src/components/manifest/Attachment.jsx
@@ -10,6 +10,18 @@ import DeleteOutlineOutlinedIcon from '@mui/icons-material/DeleteOutlineOutlined
 import { tileBaseSx, TILE_SIZE } from 'dashgui/tiles';
 import { generateTextThumbnail } from '../../utils/textThumbnail';
 import { notifyErrorMessage } from '../../utils/notify';
+import {
+  SCRIM_ACTION,
+  SCRIM_ATTACHMENT,
+  SCRIM_HEAVY,
+  SURFACE_BASE,
+  SURFACE_FAINT,
+  SURFACE_RAISED,
+  SURFACE_SUBTLE,
+  VEIL_DISABLED,
+  VEIL_TEXT,
+  WHITE,
+} from '../../colors';
 
 export class Attachment extends PureComponent {
   state = {
@@ -120,7 +132,7 @@ export class Attachment extends PureComponent {
           position: 'relative',
           overflow: 'hidden',
           cursor: disabled ? 'default' : 'pointer',
-          bgcolor: isText ? '#fcfcfc' : '#f8fafc',
+          bgcolor: isText ? SURFACE_FAINT : SURFACE_BASE,
           border: '1px solid',
           borderColor: 'divider',
           ...(disabled ? { opacity: 0.6, pointerEvents: 'none' } : {}),
@@ -135,7 +147,7 @@ export class Attachment extends PureComponent {
             display: 'flex',
             alignItems: 'center',
             justifyContent: 'center',
-            bgcolor: isText ? '#fafafa' : '#f1f5f9',
+            bgcolor: isText ? SURFACE_SUBTLE : SURFACE_RAISED,
           }}
         >
           {thumbnail ? (
@@ -156,7 +168,7 @@ export class Attachment extends PureComponent {
                 width: '100%',
                 height: '100%',
                 p: 1.25,
-                bgcolor: '#fafafa',
+                bgcolor: SURFACE_SUBTLE,
                 display: 'flex',
                 flexDirection: 'column',
                 justifyContent: 'flex-start',
@@ -243,13 +255,13 @@ export class Attachment extends PureComponent {
                   disabled={disabled || hasArticles}
                   onClick={this.handleRescan}
                   sx={{
-                    bgcolor: 'rgba(0, 0, 0, 0.6)',
-                    color: hasArticles ? 'rgba(255, 255, 255, 0.3)' : '#fff',
+                    bgcolor: SCRIM_ACTION,
+                    color: hasArticles ? VEIL_DISABLED : WHITE,
                     p: 0.5,
                     backdropFilter: 'blur(2px)',
                     cursor: hasArticles ? 'not-allowed' : 'pointer',
                     '&:hover': {
-                      bgcolor: hasArticles ? 'rgba(0, 0, 0, 0.6)' : 'rgba(0, 0, 0, 0.85)',
+                      bgcolor: hasArticles ? SCRIM_ACTION : SCRIM_HEAVY,
                     },
                   }}
                 >
@@ -265,8 +277,8 @@ export class Attachment extends PureComponent {
                 disabled={disabled}
                 onClick={this.handleDelete}
                 sx={{
-                  bgcolor: 'rgba(0, 0, 0, 0.6)',
-                  color: '#fff',
+                  bgcolor: SCRIM_ACTION,
+                  color: WHITE,
                   p: 0.5,
                   backdropFilter: 'blur(2px)',
                   '&:hover': { bgcolor: 'error.main' },
@@ -287,7 +299,7 @@ export class Attachment extends PureComponent {
             bottom: 0,
             px: 1,
             py: 0.5,
-            background: 'linear-gradient(transparent, rgba(0,0,0,0.75) 40%, rgba(0,0,0,0.85))',
+            background: SCRIM_ATTACHMENT,
             textAlign: 'left',
             pointerEvents: 'none',
           }}
@@ -296,7 +308,7 @@ export class Attachment extends PureComponent {
             variant="caption"
             fontWeight={600}
             noWrap
-            sx={{ color: '#fff', display: 'block', fontSize: '0.72rem', lineHeight: 1.2 }}
+            sx={{ color: WHITE, display: 'block', fontSize: '0.72rem', lineHeight: 1.2 }}
           >
             {name}
           </Typography>
@@ -304,7 +316,7 @@ export class Attachment extends PureComponent {
             <Typography
               variant="caption"
               noWrap
-              sx={{ color: 'rgba(255,255,255,0.8)', fontSize: '0.65rem' }}
+              sx={{ color: VEIL_TEXT, fontSize: '0.65rem' }}
             >
               {this.formatFileSize(size)}
             </Typography>
diff --git a/src/components/manifest/BookDeliveryDialog.jsx b/src/components/manifest/BookDeliveryDialog.jsx
index 93f1623..180f9e8 100644
--- a/src/components/manifest/BookDeliveryDialog.jsx
+++ b/src/components/manifest/BookDeliveryDialog.jsx
@@ -35,6 +35,10 @@ import {
   bookDeliveryLines,
 } from '../../utils/deliveryLedger';
 import warehouseAutomat from '../../automats/warehouseAutomat';
+import {
+  SURFACE_BASE,
+  SURFACE_RAISED,
+} from '../../colors';
 
 export default class BookDeliveryDialog extends PureComponent {
   constructor(props) {
@@ -292,7 +296,7 @@ export default class BookDeliveryDialog extends PureComponent {
           display: 'flex',
           flexWrap: 'wrap',
           gap: 3,
-          backgroundColor: '#f8fafc',
+          backgroundColor: SURFACE_BASE,
           alignItems: 'center',
         }}
       >
@@ -391,7 +395,7 @@ export default class BookDeliveryDialog extends PureComponent {
     return (
       <TableContainer component={Paper} variant="outlined" sx={{ mb: 2 }}>
         <Table size="small">
-          <TableHead sx={{ backgroundColor: '#f1f5f9' }}>
+          <TableHead sx={{ backgroundColor: SURFACE_RAISED }}>
             <TableRow>
               <TableCell sx={{ fontWeight: 600 }}>SKU</TableCell>
               <TableCell sx={{ fontWeight: 600 }}>Artikel</TableCell>
diff --git a/src/components/manifest/DeliveryList.jsx b/src/components/manifest/DeliveryList.jsx
index 2bb7943..ce201d1 100644
--- a/src/components/manifest/DeliveryList.jsx
+++ b/src/components/manifest/DeliveryList.jsx
@@ -21,6 +21,9 @@ import { notifyError } from '../../utils/notify';
 import BookDeliveryDialog from './BookDeliveryDialog';
 import withNavigate from '../withNavigate';
 import { formatDate, numberDisplay } from './manifestConfig';
+import {
+  ORANGE_PANEL,
+} from '../../colors';
 
 function sortDeliveries(docs) {
   if (!Array.isArray(docs)) return [];
@@ -385,7 +388,7 @@ export class DeliveryList extends PureComponent {
           onDelete={this.handleDelete}
           deleteDisabled={busyId != null}
           emptyMessage="Noch keine Lieferungen."
-          color="#fed7aa"
+          color={ORANGE_PANEL}
           getEditLabel={(row) => `„${row.number}“ bearbeiten`}
           getDeleteLabel={(row) => `„${row.number}“ löschen`}
         />
diff --git a/src/components/manifest/ManifestFormLine.jsx b/src/components/manifest/ManifestFormLine.jsx
index 61d41f4..8eeb126 100644
--- a/src/components/manifest/ManifestFormLine.jsx
+++ b/src/components/manifest/ManifestFormLine.jsx
@@ -24,6 +24,9 @@ import { primaryPrice, priceBrutto } from '../../utils/articleDetail';
 import artikelAutomat, { createArticleSelector, getArticle } from '../../automats/artikelAutomat';
 import { artikelDetailPath } from '../article/articleRoute';
 import { BrandLabel } from '../brand';
+import {
+  BORDER,
+} from '../../colors';
 
 class ManifestFormLine extends PureComponent {
   constructor(props) {
@@ -219,7 +222,6 @@ class ManifestFormLine extends PureComponent {
           htmlInput: {
             inputMode: type === 'number' ? 'decimal' : 'text',
             style: { textAlign: align },
-            spellCheck: false,
             autoComplete: 'off',
             step: type === 'number' ? 'any' : undefined,
           },
@@ -323,7 +325,7 @@ class ManifestFormLine extends PureComponent {
               minWidth: 28,
               borderRadius: 0.75,
               overflow: 'hidden',
-              bgcolor: '#e2e8f0',
+              bgcolor: BORDER,
               display: 'flex',
               alignItems: 'center',
               justifyContent: 'center',
diff --git a/src/components/manifest/ManifestHeader.jsx b/src/components/manifest/ManifestHeader.jsx
index c0ccbe6..787f90f 100644
--- a/src/components/manifest/ManifestHeader.jsx
+++ b/src/components/manifest/ManifestHeader.jsx
@@ -15,6 +15,9 @@ import FileDropzone from '../FileDropzone';
 import AttachmentList from './AttachmentList';
 import { hasArticleLines, manifestConfig, partyDisplayName } from './manifestConfig';
 import { notifyErrorMessage } from '../../utils/notify';
+import {
+  SURFACE_RAISED,
+} from '../../colors';
 
 class ManifestHeader extends PureComponent {
   constructor(props) {
@@ -136,7 +139,6 @@ class ManifestHeader extends PureComponent {
               autoComplete="off"
               slotProps={{
                 inputLabel: { shrink: true },
-                htmlInput: { spellCheck: false },
               }}
               sx={{
                 flex: { xs: '1 1 100%', sm: '1 1 150px' },
@@ -165,7 +167,6 @@ class ManifestHeader extends PureComponent {
                     ...params.slotProps,
                     htmlInput: {
                       ...params.slotProps?.htmlInput,
-                      spellCheck: false,
                       autoComplete: 'off',
                     },
                   }}
@@ -247,7 +248,7 @@ class ManifestHeader extends PureComponent {
         <PanelTile
           wide={1}
           minHeight={160}
-          color={actionsColor ?? '#f1f5f9'}
+          color={actionsColor ?? SURFACE_RAISED}
           sx={{
             gridColumn: { xs: '1 / -1', sm: '1 / -1', md: 'span 1' },
           }}
diff --git a/src/components/manifest/PdfViewerPanel.jsx b/src/components/manifest/PdfViewerPanel.jsx
index 2b32397..89bd1a2 100644
--- a/src/components/manifest/PdfViewerPanel.jsx
+++ b/src/components/manifest/PdfViewerPanel.jsx
@@ -15,6 +15,11 @@ import ViewSidebarIcon from '@mui/icons-material/ViewSidebar';
 import { enqueueSnackbar } from 'notistack';
 import { PanelTile } from 'dashgui/panels';
 import { delivery as deliveryApi } from '../../api';
+import {
+  SURFACE_BASE,
+  SURFACE_WASH,
+  WHITE,
+} from '../../colors';
 
 /**
  * Inline PDF viewer rendered as a panel tile, mirroring TextEditorPanel's
@@ -125,7 +130,7 @@ export class PdfViewerPanel extends PureComponent {
       <PanelTile
         wide={wide}
         minHeight={320}
-        color="#f8fafc"
+        color={SURFACE_BASE}
         sx={{ height, minHeight: 320 }}
       >
         <Box
@@ -205,7 +210,7 @@ export class PdfViewerPanel extends PureComponent {
               border: '1px solid',
               borderColor: 'divider',
               borderRadius: 1,
-              bgcolor: '#ffffff',
+              bgcolor: WHITE,
               overflow: 'hidden',
             }}
           >
@@ -217,7 +222,7 @@ export class PdfViewerPanel extends PureComponent {
                   display: 'flex',
                   alignItems: 'center',
                   justifyContent: 'center',
-                  bgcolor: 'rgba(248, 250, 252, 0.7)',
+                  bgcolor: SURFACE_WASH,
                   zIndex: 2,
                 }}
               >
diff --git a/src/components/manifest/TextEditorPanel.jsx b/src/components/manifest/TextEditorPanel.jsx
index 22cdb73..6555739 100644
--- a/src/components/manifest/TextEditorPanel.jsx
+++ b/src/components/manifest/TextEditorPanel.jsx
@@ -18,6 +18,11 @@ import ViewSidebarIcon from '@mui/icons-material/ViewSidebar';
 import { enqueueSnackbar } from 'notistack';
 import { PanelTile } from 'dashgui/panels';
 import { delivery as deliveryApi } from '../../api';
+import {
+  SURFACE_BASE,
+  SURFACE_WASH,
+  WHITE,
+} from '../../colors';
 
 /**
  * Inline text-file viewer/editor rendered as a full-width panel tile below the
@@ -169,7 +174,7 @@ export class TextEditorPanel extends PureComponent {
       <PanelTile
         wide={wide}
         minHeight={320}
-        color="#f8fafc"
+        color={SURFACE_BASE}
         sx={{ height, minHeight: 320 }}
       >
         <Box
@@ -264,7 +269,7 @@ export class TextEditorPanel extends PureComponent {
                   display: 'flex',
                   alignItems: 'center',
                   justifyContent: 'center',
-                  bgcolor: 'rgba(248, 250, 252, 0.7)',
+                  bgcolor: SURFACE_WASH,
                   zIndex: 2,
                 }}
               >
@@ -292,7 +297,7 @@ export class TextEditorPanel extends PureComponent {
                     fontSize: '0.72rem',
                     lineHeight: 1.45,
                     tabSize: 4,
-                    bgcolor: '#ffffff',
+                    bgcolor: WHITE,
                     p: 1.5,
                     '& textarea': {
                       height: '100% !important',
diff --git a/src/components/manifest/manifestConfig.js b/src/components/manifest/manifestConfig.js
index c1494d7..25b31af 100644
--- a/src/components/manifest/manifestConfig.js
+++ b/src/components/manifest/manifestConfig.js
@@ -9,6 +9,12 @@ import customergroupAutomat from '../../automats/customergroupAutomat';
 import deliveryAutomat from '../../automats/deliveryAutomat';
 import quoteAutomat from '../../automats/quoteAutomat';
 import orderAutomat from '../../automats/orderAutomat';
+import {
+  GREEN_PANEL,
+  ORANGE_PANEL,
+  PURPLE_PANEL,
+  YELLOW_PANEL,
+} from '../../colors';
 
 /** Groups that are not sales customers (filter client-side). */
 export const EXCLUDED_CUSTOMER_GROUP_NAMES = new Set(['Lieferanten', 'POS']);
@@ -559,9 +565,9 @@ export function manifestConfig(kind) {
       getPathLabel: 'GET /api/delivery/:id',
       postPathLabel: 'POST /api/delivery',
       patchPathLabel: 'PATCH /api/delivery/:id',
-      listColor: '#fed7aa',
-      headerColor: '#fed7aa',
-      linesColor: '#bbf7d0',
+      listColor: ORANGE_PANEL,
+      headerColor: ORANGE_PANEL,
+      linesColor: GREEN_PANEL,
       requirePartyBeforeLines: false,
       listAutomat: deliveryAutomat,
       partiesByIdFromList: (parties) =>
@@ -595,9 +601,9 @@ export function manifestConfig(kind) {
       getPathLabel: 'GET /api/quote/:id',
       postPathLabel: 'POST /api/quote',
       patchPathLabel: 'PATCH /api/quote/:id',
-      listColor: '#fde68a',
-      headerColor: '#fde68a',
-      linesColor: '#bbf7d0',
+      listColor: YELLOW_PANEL,
+      headerColor: YELLOW_PANEL,
+      linesColor: GREEN_PANEL,
       requirePartyBeforeLines: false,
       listAutomat: quoteAutomat,
       partiesByIdFromList: (parties) =>
@@ -628,9 +634,9 @@ export function manifestConfig(kind) {
       getPathLabel: 'GET /api/order/:id',
       postPathLabel: 'POST /api/order',
       patchPathLabel: 'PATCH /api/order/:id',
-      listColor: '#c4b5fd',
-      headerColor: '#c4b5fd',
-      linesColor: '#bbf7d0',
+      listColor: PURPLE_PANEL,
+      headerColor: PURPLE_PANEL,
+      linesColor: GREEN_PANEL,
       requirePartyBeforeLines: false,
       listAutomat: orderAutomat,
       partiesByIdFromList: (parties) =>
diff --git a/src/components/tiles/ArticleTile.jsx b/src/components/tiles/ArticleTile.jsx
index 77e575e..579e4dc 100644
--- a/src/components/tiles/ArticleTile.jsx
+++ b/src/components/tiles/ArticleTile.jsx
@@ -14,6 +14,16 @@ import {
 } from '../article/ThumbHashImage';
 import { BrandLabel } from '../brand';
 import { thumb } from '../../api';
+import {
+  GREEN,
+  ICE,
+  INK_STRONG,
+  SCRIM_LABEL,
+  SCRIM_TILE,
+  TEXT_GLOW_DARK,
+  TEXT_GLOW_LIGHT,
+  WHITE,
+} from '../../colors';
 
 const MIN_EDGE_STRETCH = 10;
 
@@ -85,7 +95,7 @@ function drawContainedWithStretchedEdges(
     const grow = maxBlur * 0.5;
     lctx.globalCompositeOperation = 'destination-in';
     lctx.filter = `blur(${maxBlur}px)`;
-    lctx.fillStyle = '#000';
+    lctx.fillStyle = INK_STRONG;
     lctx.fillRect(
       offsetX - grow,
       offsetY - grow,
@@ -325,7 +335,7 @@ export class ArticleTile extends Tile {
           px: 0.75,
           py: 0.25,
           borderRadius: 999,
-          bgcolor: 'rgba(0, 0, 0, 0.65)',
+          bgcolor: SCRIM_LABEL,
           color: 'common.white',
           fontSize: 11,
           fontWeight: 600,
@@ -389,10 +399,10 @@ export class ArticleTile extends Tile {
             bottom: 0,
             px: 1,
             py: 0.75,
-            background: 'linear-gradient(transparent, rgba(0,0,0,0.65))',
+            background: SCRIM_TILE,
             textAlign: 'left',
-            color: '#fff',
-            textShadow: '0 1px 3px rgba(0, 0, 0, 0.95), 0 0 2px rgba(0, 0, 0, 0.85)',
+            color: WHITE,
+            textShadow: TEXT_GLOW_DARK,
           }}
         >
           {article?.brand?.name ? (
@@ -405,11 +415,11 @@ export class ArticleTile extends Tile {
                 variant: 'caption',
                 noWrap: true,
                 sx: {
-                  color: '#b3e5fc',
+                  color: ICE,
                   opacity: 1,
                   fontWeight: 500,
                   lineHeight: 1.1,
-                  textShadow: '0 1px 3px rgba(0, 0, 0, 0.95), 0 0 2px rgba(0, 0, 0, 0.85)',
+                  textShadow: TEXT_GLOW_DARK,
                 },
               }}
               sx={{ mb: 0.25 }}
@@ -421,9 +431,9 @@ export class ArticleTile extends Tile {
               fontWeight={600}
               noWrap
               sx={{
-                color: '#111',
+                color: INK_STRONG,
                 lineHeight: 1.2,
-                textShadow: '0 0 3px rgba(255, 255, 255, 1), 0 0 6px rgba(255, 255, 255, 0.9), 0 1px 2px rgba(255, 255, 255, 0.9)',
+                textShadow: TEXT_GLOW_LIGHT,
               }}
             >
               {label}
@@ -434,8 +444,8 @@ export class ArticleTile extends Tile {
               variant="caption"
               noWrap
               sx={{
-                color: '#ffffff',
-                textShadow: '0 1px 3px rgba(0, 0, 0, 0.95), 0 0 2px rgba(0, 0, 0, 0.85)',
+                color: WHITE,
+                textShadow: TEXT_GLOW_DARK,
               }}
             >
               {sku}
@@ -447,8 +457,8 @@ export class ArticleTile extends Tile {
               fontWeight={600}
               component="div"
               sx={{
-                color: '#b9f6ca',
-                textShadow: '0 1px 3px rgba(0, 0, 0, 0.95), 0 0 2px rgba(0, 0, 0, 0.85)',
+                color: GREEN,
+                textShadow: TEXT_GLOW_DARK,
               }}
             >
               {formatPrice(article.net)}
diff --git a/src/components/tiles/CategoryTile.jsx b/src/components/tiles/CategoryTile.jsx
index dd68735..39cf621 100644
--- a/src/components/tiles/CategoryTile.jsx
+++ b/src/components/tiles/CategoryTile.jsx
@@ -12,6 +12,12 @@ import DeleteOutlinedIcon from '@mui/icons-material/DeleteOutlined';
 import { getThumbHashDataUrl, isImageLoaded, markImageLoaded } from '../article/ThumbHashImage';
 import { thumb } from '../../api';
 import { tileBaseSx } from 'dashgui/tiles';
+import {
+  RED_TINT,
+  SCRIM_BADGE,
+  SCRIM_MEDIUM,
+  VEIL_HOVER,
+} from '../../colors';
 
 /**
  * Top row (1/3): sort handle | settings toggle | move handle.
@@ -28,7 +34,7 @@ function TopBand({ onSettingsClick, settingsTab, terminalCount, onPlacementClick
     top: '50%',
     transform: 'translateY(-50%)',
     color: 'common.white',
-    '&:hover': { bgcolor: 'rgba(255, 255, 255, 0.15)' },
+    '&:hover': { bgcolor: VEIL_HOVER },
   };
 
   return (
@@ -39,7 +45,7 @@ function TopBand({ onSettingsClick, settingsTab, terminalCount, onPlacementClick
         left: 0,
         right: 0,
         height: '33.33%',
-        bgcolor: 'rgba(0, 0, 0, 0.45)',
+        bgcolor: SCRIM_MEDIUM,
       }}
     >
       <IconButton
@@ -115,7 +121,7 @@ function MiddleBand({ settingsTab, nameInput, terminals, categoryPosterminalIds,
     ...(isActionTab
       ? {
         '&:hover': {
-          bgcolor: settingsTab === -3 ? 'rgba(211, 47, 47, 0.12)' : 'grey.400',
+          bgcolor: settingsTab === -3 ? RED_TINT : 'grey.400',
         },
       }
       : {}),
@@ -332,7 +338,7 @@ export class CategoryTile extends Component {
           display: 'flex',
           alignItems: 'center',
           justifyContent: 'center',
-          bgcolor: 'rgba(0, 0, 0, 0.5)',
+          bgcolor: SCRIM_BADGE,
           px: 1,
         }}
       >
diff --git a/src/index.css b/src/index.css
index 1e77cb9..47a1d70 100644
--- a/src/index.css
+++ b/src/index.css
@@ -1,11 +1,13 @@
 @import 'ag-grid-community/styles/ag-grid.css';
 @import 'ag-grid-community/styles/ag-theme-alpine.css';
 
+/* App background. Provided as a CSS custom property by src/colors.js
+   (installCssVars), with a hard-coded fallback for the very first paint. */
 html,
 body,
 #root {
   min-height: 100%;
-  background-color: #85b7ad;
+  background-color: var(--df-main-background, #82b8b4);
 }
 
 html,
@@ -14,20 +16,60 @@ body {
   touch-action: manipulation;
 }
 
+/* ────────────────────────────────────────────────────────────────────────────
+ * SYSTEM-WIDE SPELLCHECK OFF
+ *
+ * dashfront is a German ERP/POS for article numbers, EANs, SKUs and quantities.
+ * None of that vocabulary exists in any dictionary, so a spellchecker only ever
+ * paints red squiggles and slows typing. Every editable surface must therefore
+ * opt out — including inputs the app does not own (ag-grid filter boxes, and
+ * any input a browser or extension injects into the page).
+ *
+ * The `spellcheck` content attribute is the only switch: it is the default for
+ * every <input>/<textarea>, and browsers honour it as a presentational hint
+ * regardless of the element's own attribute.
+ *
+ * `TextInput` (src/components/TextInput.jsx) additionally sets spellCheck=false
+ * per input, which covers fields React re-renders. This rule is the backstop
+ * that also covers DOM we do not create.
+ * ──────────────────────────────────────────────────────────────────────────── */
+input,
+textarea,
+[contenteditable] {
+  spellcheck: false;
+}
+
 html {
   scrollbar-gutter: stable;
 }
 
-/* SortableJS: Kategorie-Reorder im Edit-Modus */
+/* SortableJS: Kategorie-Reorder im Edit-Modus.
+   Colors come from CSS custom properties injected by src/colors.js
+   (installCssVars), so this file stays in sync with the JS token module.
+   Plain CSS cannot import the JS module directly. */
 .sortable-ghost {
-  outline: 2px dashed #2e7d32;
+  opacity: 0.35 !important;
+  outline: 2px dashed var(--df-sort-ghost, #15803d);
   outline-offset: 2px;
-  background-color: rgba(46, 125, 50, 0.12) !important;
+  background-color: var(--df-sort-ghost-tint, rgba(21, 128, 61, 0.12)) !important;
+}
+
+.sortable-chosen {
+  box-shadow: var(--df-shadow-sortable, 0 4px 16px rgba(15, 23, 42, 0.12));
+}
+
+.drag-handle {
+  cursor: grab;
+  touch-action: none;
+}
+
+.drag-handle:active {
+  cursor: grabbing;
 }
 
 .sortable-drag {
   opacity: 1 !important;
-  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.28);
+  box-shadow: var(--df-shadow-drag, 0 8px 20px rgba(15, 23, 42, 0.28));
   cursor: grabbing !important;
   user-select: none !important;
 }
\ No newline at end of file
diff --git a/src/main.jsx b/src/main.jsx
index 185315c..966e801 100644
--- a/src/main.jsx
+++ b/src/main.jsx
@@ -7,11 +7,16 @@ import { SnackbarProvider } from 'notistack';
 import AuthBootstrap from './components/AuthBootstrap';
 import App from './App';
 import { getActiveTheme } from './theme';
+import { installCssVars } from './colors';
 // Side-effect imports: each module registers its automat and subscribes to
 // authAutomat, so the stores must be evaluated before the session bootstraps.
 import './automats';
 import './index.css';
 
+// Publish the color tokens as CSS custom properties so index.css (and any
+// other plain-CSS stylesheet) reads the same palette as the React components.
+installCssVars();
+
 // Dev-only Automat inspector. The `import.meta.env.DEV` branch is statically
 // eliminated in production builds, so this module never ships to users.
 const AutomatInspector = import.meta.env.DEV
diff --git a/src/nav.js b/src/nav.js
index 5914a2f..c71c2ae 100644
--- a/src/nav.js
+++ b/src/nav.js
@@ -22,6 +22,7 @@ import PublicIcon from '@mui/icons-material/Public';
 import BarChartIcon from '@mui/icons-material/BarChart';
 import { isKategorienPath } from './components/category/categoryRoute';
 import { deliveryEditorAutomat } from './automats/deliveryEditorAutomat';
+import { NAV_ITEM_ACTIVE_ACCENT } from './colors';
 
 class DeliveryNavIcon extends PureComponent {
   constructor(props) {
@@ -53,7 +54,7 @@ class DeliveryNavIcon extends PureComponent {
       ...rest,
       sx: [
         ...(Array.isArray(sx) ? sx : sx ? [sx] : []),
-        (theme) => (hasDraft ? { color: theme.nav?.itemActiveAccent || '#2dd4bf' } : null),
+        (theme) => (hasDraft ? { color: theme.nav?.itemActiveAccent || NAV_ITEM_ACTIVE_ACCENT } : null),
       ],
     });
   }
diff --git a/src/routes/artikel.jsx b/src/routes/artikel.jsx
index f55931a..e168005 100644
--- a/src/routes/artikel.jsx
+++ b/src/routes/artikel.jsx
@@ -32,6 +32,9 @@ import { artikelDetailPath } from '../components/article/articleRoute';
 import withSearchParams from '../components/article/withSearchParams';
 import { setLastArticleSku } from '../automats';
 import { BrandLabel } from '../components/brand';
+import {
+  BLUE_BG,
+} from '../colors';
 
 const resultRowSx = {
   alignItems: 'center',
@@ -276,7 +279,6 @@ class ArtikelSearchPage extends Component {
             onChange={this.handleInputChange}
             slotProps={{
               htmlInput: {
-                spellCheck: false,
                 autoCapitalize: 'off',
                 autoCorrect: 'off',
               },
@@ -373,7 +375,7 @@ class ArtikelSearchPage extends Component {
                 measureElement={
                   <Box
                     sx={{
-                      bgcolor: '#dbeafe',
+                      bgcolor: BLUE_BG,
                       p: 2,
                       borderRadius: 1,
                       textAlign: 'center',
diff --git a/src/routes/artikel/kategorien.jsx b/src/routes/artikel/kategorien.jsx
index d466848..c30ab23 100644
--- a/src/routes/artikel/kategorien.jsx
+++ b/src/routes/artikel/kategorien.jsx
@@ -498,7 +498,10 @@ class ArtikelKategorienPage extends PureComponent {
                       }}
                       variant="standard"
                       size="small"
-                      slotProps={{ inputLabel: { shrink: true }, input: { spellCheck: false } }}
+                      slotProps={{
+                        inputLabel: { shrink: true },
+                        htmlInput: { spellCheck: false },
+                      }}
                       sx={{
                         width: '100%',
                         '& .MuiInput-underline:before, & .MuiInput-underline:after': {
diff --git a/src/routes/artikel/lager.jsx b/src/routes/artikel/lager.jsx
index fae7fe5..ead2923 100644
--- a/src/routes/artikel/lager.jsx
+++ b/src/routes/artikel/lager.jsx
@@ -21,6 +21,9 @@ import { backendErrorFrom } from '../../utils/backendError';
 import { notifyError } from '../../utils/notify';
 import { setLastArticleSku } from '../../automats';
 import warehouseAutomat from '../../automats/warehouseAutomat';
+import {
+  GREEN_PANEL,
+} from '../../colors';
 
 function draftsFrom(warehouses) {
   return Object.fromEntries(warehouses.map((row) => [row.id, row.name]));
@@ -285,15 +288,9 @@ class ArtikelLagerPage extends PureComponent {
     return (
       <>
         {/* SortableJS ghost / chosen styling */}
-        <style>{`
-          .sortable-ghost { opacity: 0.35 !important; }
-          .sortable-chosen { box-shadow: 0 4px 16px rgba(0,0,0,0.12); }
-          .drag-handle { cursor: grab; touch-action: none; }
-          .drag-handle:active { cursor: grabbing; }
-        `}</style>
 
         <PanelTileGrid>
-          <PanelTile wide={2} minHeight={280} color="#bbf7d0">
+          <PanelTile wide={2} minHeight={280} color={GREEN_PANEL}>
             <Stack spacing={2}>
               {returnTo ? (
                 <Alert
diff --git a/src/routes/artikel/marken.jsx b/src/routes/artikel/marken.jsx
index 8c0645e..6144e88 100644
--- a/src/routes/artikel/marken.jsx
+++ b/src/routes/artikel/marken.jsx
@@ -19,6 +19,9 @@ import { setLastArticleSku } from '../../automats';
 import brandAutomat from '../../automats/brandAutomat';
 import { enqueueSnackbar } from 'notistack';
 import { BrandThumb, BrandImageSearchDialog } from '../../components/brand';
+import {
+  PURPLE_PANEL,
+} from '../../colors';
 
 function draftsFrom(brands) {
   return Object.fromEntries(brands.map((b) => [b.id, b.name]));
@@ -180,7 +183,7 @@ class ArtikelMarkenPage extends PureComponent {
 
     return (
       <PanelTileGrid>
-        <PanelTile wide={2} minHeight={280} color="#ddd6fe">
+        <PanelTile wide={2} minHeight={280} color={PURPLE_PANEL}>
           <List dense disablePadding>
             {brands.length === 0 ? (
               <Typography variant="body2" color="text.secondary" sx={{ py: 1 }}>
diff --git a/src/routes/artikel/merkmale.jsx b/src/routes/artikel/merkmale.jsx
index 00245a8..8f532a2 100644
--- a/src/routes/artikel/merkmale.jsx
+++ b/src/routes/artikel/merkmale.jsx
@@ -24,6 +24,15 @@ import { notifyError } from '../../utils/notify';
 import { setLastArticleSku } from '../../automats';
 import attributeAutomat, { selectAttributes } from '../../automats/attributeAutomat';
 import propertyAutomat, { selectProperties } from '../../automats/propertyAutomat';
+import {
+  BLUE_PANEL,
+  ORANGE_PANEL,
+  PURPLE_PANEL,
+  SELECT_BG,
+  SELECT_BG_HOVER,
+  SELECT_BORDER,
+  TINT_SUBTLE,
+} from '../../colors';
 
 function draftsFrom(items, key = 'name') {
   return Object.fromEntries((items || []).map((row) => [row.id, row[key]]));
@@ -609,16 +618,10 @@ class ArtikelMerkmalePage extends PureComponent {
     return (
       <>
         {/* SortableJS ghost / chosen styling from /artikel/lager */}
-        <style>{`
-          .sortable-ghost { opacity: 0.35 !important; }
-          .sortable-chosen { box-shadow: 0 4px 16px rgba(0,0,0,0.12); }
-          .drag-handle { cursor: grab; touch-action: none; }
-          .drag-handle:active { cursor: grabbing; }
-        `}</style>
 
         <PanelTileGrid>
           {/* Tile 1: Attribute (Auswahllisten) */}
-          <PanelTile wide={2} minHeight={280} color="#bfdbfe">
+          <PanelTile wide={2} minHeight={280} color={BLUE_PANEL}>
             <Stack spacing={2}>
               <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
                 <StyleIcon sx={{ color: 'text.secondary', fontSize: 20 }} />
@@ -642,11 +645,11 @@ class ArtikelMerkmalePage extends PureComponent {
                         borderRadius: 1.5,
                         alignItems: 'center',
                         cursor: 'pointer',
-                        bgcolor: isSelected ? 'rgba(59, 130, 246, 0.12)' : 'transparent',
-                        border: isSelected ? '1px solid rgba(59, 130, 246, 0.3)' : '1px solid transparent',
+                        bgcolor: isSelected ? SELECT_BG : 'transparent',
+                        border: isSelected ? `1px solid ${SELECT_BORDER}` : '1px solid transparent',
                         transition: 'all 0.15s ease',
                         '&:hover': {
-                          bgcolor: isSelected ? 'rgba(59, 130, 246, 0.16)' : 'rgba(0, 0, 0, 0.04)',
+                          bgcolor: isSelected ? SELECT_BG_HOVER : TINT_SUBTLE,
                         },
                       }}
                       data-id={a.id}
@@ -764,7 +767,7 @@ class ArtikelMerkmalePage extends PureComponent {
           </PanelTile>
 
           {/* Tile 2: Werte für das gewählte Attribut */}
-          <PanelTile wide={2} minHeight={280} color="#ddd6fe">
+          <PanelTile wide={2} minHeight={280} color={PURPLE_PANEL}>
             <Stack spacing={2}>
               <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
                 <LabelImportantIcon sx={{ color: 'text.secondary', fontSize: 20 }} />
@@ -867,7 +870,7 @@ class ArtikelMerkmalePage extends PureComponent {
           </PanelTile>
 
           {/* Tile 3: Merkmale (Freitext) */}
-          <PanelTile wide={2} minHeight={280} color="#fed7aa">
+          <PanelTile wide={2} minHeight={280} color={ORANGE_PANEL}>
             <Stack spacing={2}>
               <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
                 <TuneIcon sx={{ color: 'text.secondary', fontSize: 20 }} />
diff --git a/src/routes/artikel/vorlagen.jsx b/src/routes/artikel/vorlagen.jsx
index e46c05d..aab352a 100644
--- a/src/routes/artikel/vorlagen.jsx
+++ b/src/routes/artikel/vorlagen.jsx
@@ -25,6 +25,10 @@ import { notifyError } from '../../utils/notify';
 import { setLastArticleSku } from '../../automats';
 import { labeltemplate } from '../../api';
 import { enqueueSnackbar } from 'notistack';
+import {
+  BLUE_BG,
+  SURFACE_BASE,
+} from '../../colors';
 
 const CanvasEditor = lazy(async () => {
   await import('react-canvas-label-editor/style.css');
@@ -465,7 +469,7 @@ class ArtikelVorlagenPage extends PureComponent {
     return (
       <>
         <PanelTileGrid>
-          <PanelTile wide={3} color="#dbeafe">
+          <PanelTile wide={3} color={BLUE_BG}>
             <Box sx={{ display: 'flex', alignItems: 'center', justifyContent: 'flex-end', mb: 2 }}>
               <Button
                 variant="contained"
@@ -517,7 +521,7 @@ class ArtikelVorlagenPage extends PureComponent {
                       onClick={() => this.handleOpenEdit(tmpl)}
                       sx={{
                         height: 100,
-                        bgcolor: '#f8f8f8',
+                        bgcolor: SURFACE_BASE,
                         display: 'flex',
                         alignItems: 'center',
                         justifyContent: 'center',
diff --git a/src/routes/infos/ArticleHistoryPage.jsx b/src/routes/infos/ArticleHistoryPage.jsx
index 34e2ce3..14726f3 100644
--- a/src/routes/infos/ArticleHistoryPage.jsx
+++ b/src/routes/infos/ArticleHistoryPage.jsx
@@ -8,6 +8,9 @@ import { PanelTile } from 'dashgui/panels';
 import { AutomatGrid } from 'react-virtual-aggridautomat';
 import { articleHistoryGridAutomat } from '../../automats';
 import { router } from '../../appRouter';
+import {
+  LINK,
+} from '../../colors';
 
 const COLUMN_DEFS = [
   {
@@ -43,7 +46,7 @@ const COLUMN_DEFS = [
             e.preventDefault();
             void router.navigate(`/artikel/${encodeURIComponent(p.value)}`);
           }}
-          style={{ color: '#2563eb', fontWeight: 600, textDecoration: 'none' }}
+          style={{ color: LINK, fontWeight: 600, textDecoration: 'none' }}
         >
           {p.value}
         </a>
diff --git a/src/routes/kunde.jsx b/src/routes/kunde.jsx
index 7031667..b6de641 100644
--- a/src/routes/kunde.jsx
+++ b/src/routes/kunde.jsx
@@ -8,6 +8,9 @@ import customergroupAutomat from '../automats/customergroupAutomat';
 import { router } from '../appRouter';
 import { backendErrorFrom } from '../utils/backendError';
 import { notifyError } from '../utils/notify';
+import {
+  BLUE_PANEL,
+} from '../colors';
 
 function sortEntities(entities) {
   return [...entities].sort((a, b) => {
@@ -142,7 +145,7 @@ class KundeListePage extends PureComponent {
         onDelete={this.handleDelete}
         deleteDisabled={busyId != null}
         emptyMessage="Noch keine Kunden."
-        color="#bfdbfe"
+        color={BLUE_PANEL}
         getEditLabel={(row) => `„${label(row)}“ bearbeiten`}
         getDeleteLabel={(row) => `„${label(row)}“ löschen`}
       />
diff --git a/src/routes/kunde/_entityId.jsx b/src/routes/kunde/_entityId.jsx
index 5d1a153..77c6b86 100644
--- a/src/routes/kunde/_entityId.jsx
+++ b/src/routes/kunde/_entityId.jsx
@@ -18,6 +18,11 @@ import { requireArray, requireDefined, requireObject } from '../../utils/apiShap
 import { backendErrorFrom } from '../../utils/backendError';
 import { notifyError } from '../../utils/notify';
 import withEntityRoute from '../../components/kunde/withEntityRoute';
+import {
+  BLUE_PANEL,
+  GREEN_PANEL,
+  YELLOW_PANEL,
+} from '../../colors';
 
 const ADDRESS_FIELDS = [
   'addressType',
@@ -551,7 +556,7 @@ class KundeEditPage extends PureComponent {
 
     return (
       <PanelTileGrid>
-        <PanelTile wide={2} minHeight={200} color="#bfdbfe" title="Stammdaten">
+        <PanelTile wide={2} minHeight={200} color={BLUE_PANEL} title="Stammdaten">
           <Stack spacing={2}>
             {groupName != null ? (
               <Typography variant="body2" color="text.secondary">
@@ -586,7 +591,7 @@ class KundeEditPage extends PureComponent {
           </Stack>
         </PanelTile>
 
-        <PanelTile wide={3} minHeight={240} color="#bbf7d0" title="Adressen">
+        <PanelTile wide={3} minHeight={240} color={GREEN_PANEL} title="Adressen">
           <Stack spacing={2}>
             {addresses.length === 0 ? (
               <Typography variant="body2" color="text.secondary">
@@ -656,7 +661,7 @@ class KundeEditPage extends PureComponent {
           </Stack>
         </PanelTile>
 
-        <PanelTile wide={3} minHeight={200} color="#fde68a" title="Kontakte">
+        <PanelTile wide={3} minHeight={200} color={YELLOW_PANEL} title="Kontakte">
           <Stack spacing={2}>
             {contacts.length === 0 ? (
               <Typography variant="body2" color="text.secondary">
diff --git a/src/routes/kunde/gruppen.jsx b/src/routes/kunde/gruppen.jsx
index 4569e92..cada452 100644
--- a/src/routes/kunde/gruppen.jsx
+++ b/src/routes/kunde/gruppen.jsx
@@ -20,6 +20,9 @@ import customergroupAutomat from '../../automats/customergroupAutomat';
 import { requireArray, requireDefined, requireObject } from '../../utils/apiShape';
 import { backendErrorFrom } from '../../utils/backendError';
 import { notifyError } from '../../utils/notify';
+import {
+  PURPLE_BG,
+} from '../../colors';
 
 function sortGroups(groups) {
   return [...groups].sort((a, b) => {
@@ -231,7 +234,7 @@ class KundeGruppenPage extends PureComponent {
 
     return (
       <PanelTileGrid>
-        <PanelTile wide={2} minHeight={280} color="#e9d5ff">
+        <PanelTile wide={2} minHeight={280} color={PURPLE_BG}>
           <Stack spacing={2}>
             <List dense disablePadding>
               {groups.length === 0 ? (
diff --git a/src/routes/kunde/neu.jsx b/src/routes/kunde/neu.jsx
index da23cdf..8d3dacc 100644
--- a/src/routes/kunde/neu.jsx
+++ b/src/routes/kunde/neu.jsx
@@ -14,6 +14,9 @@ import customergroupAutomat from '../../automats/customergroupAutomat';
 import { router } from '../../appRouter';
 import { requireDefined, requireObject } from '../../utils/apiShape';
 import { notifyError } from '../../utils/notify';
+import {
+  BLUE_PANEL,
+} from '../../colors';
 
 class KundeNeuPage extends PureComponent {
   constructor(props) {
@@ -95,7 +98,7 @@ class KundeNeuPage extends PureComponent {
 
     return (
       <PanelTileGrid>
-        <PanelTile wide={2} minHeight={220} color="#bfdbfe" title="Neuer Kunde">
+        <PanelTile wide={2} minHeight={220} color={BLUE_PANEL} title="Neuer Kunde">
           <Stack spacing={2}>
             <TextField
               size="small"
@@ -103,7 +106,7 @@ class KundeNeuPage extends PureComponent {
               value={number}
               disabled
               slotProps={{
-                htmlInput: { spellCheck: false, autoComplete: 'off' },
+                htmlInput: { autoComplete: 'off' },
               }}
             />
             <Select
@@ -112,9 +115,8 @@ class KundeNeuPage extends PureComponent {
               disabled={saving}
               onChange={this.handleGroupChange}
               displayEmpty
-              inputProps={{
-                spellCheck: false,
-                autoComplete: 'off',
+              slotProps={{
+                htmlInput: { autoComplete: 'off' },
               }}
             >
               {groups.map((row) => (
diff --git a/src/routes/lieferung/lieferanten.jsx b/src/routes/lieferung/lieferanten.jsx
index ff08a54..b137c6f 100644
--- a/src/routes/lieferung/lieferanten.jsx
+++ b/src/routes/lieferung/lieferanten.jsx
@@ -21,6 +21,9 @@ import { notifyError } from '../../utils/notify';
 import { setLastDeliveryPath } from '../../automats';
 import supplierAutomat from '../../automats/supplierAutomat';
 import { deliveryDraftAutomat } from '../../automats/deliveryEditorAutomat';
+import {
+  GREEN_PANEL,
+} from '../../colors';
 
 
 function sortSuppliers(suppliers) {
@@ -224,7 +227,7 @@ class LieferungLieferantenPage extends PureComponent {
 
     return (
       <PanelTileGrid>
-        <PanelTile wide={2} minHeight={280} color="#bbf7d0">
+        <PanelTile wide={2} minHeight={280} color={GREEN_PANEL}>
           <Stack spacing={2}>
             {returnTo ? (
               <Alert
diff --git a/src/routes/lieferung/neu.jsx b/src/routes/lieferung/neu.jsx
index 173c30f..970a6b5 100644
--- a/src/routes/lieferung/neu.jsx
+++ b/src/routes/lieferung/neu.jsx
@@ -50,6 +50,11 @@ import { getDeliveryEditorAutomat } from '../../automats/deliveryEditorAutomat';
 import { setLastDeliveryPath, userSettingsAutomat, setViewerPosition } from '../../automats';
 
 import { fetchDeliveryLedgerSummary } from '../../utils/deliveryLedger';
+import {
+  SURFACE_BASE,
+  SURFACE_RAISED,
+  YELLOW_BG,
+} from '../../colors';
 
 class LieferungNeuPage extends PureComponent {
   constructor(props) {
@@ -1266,7 +1271,7 @@ class LieferungNeuPage extends PureComponent {
           />
           {this.state.viewerPosition === 'top' && this.renderViewerPanels(4)}
           {this.state.unmatchedSupplierName && (
-            <PanelTile wide={4} color="#fef3c7" sx={{ gridColumn: { xs: '1 / -1', sm: '1 / -1', md: 'span 4' } }}>
+            <PanelTile wide={4} color={YELLOW_BG} sx={{ gridColumn: { xs: '1 / -1', sm: '1 / -1', md: 'span 4' } }}>
               <Alert
                 severity="warning"
                 action={
@@ -1316,7 +1321,7 @@ class LieferungNeuPage extends PureComponent {
           {this.state.viewerPosition === 'below' && this.renderViewerPanels(4)}
           {this.props.docId != null && this.renderLedgerPanel()}
           {notes && notes.length > 0 && (
-            <PanelTile wide={4} color="#fffbeb" sx={{ gridColumn: { xs: '1 / -1', sm: '1 / -1', md: 'span 4' } }}>
+            <PanelTile wide={4} color={YELLOW_BG} sx={{ gridColumn: { xs: '1 / -1', sm: '1 / -1', md: 'span 4' } }}>
               <Typography variant="subtitle2" fontWeight={700} color="warning.dark" sx={{ mb: 1.5 }}>
                 Hinweise zur PDF-Analyse ({notes.length})
               </Typography>
@@ -1401,7 +1406,7 @@ class LieferungNeuPage extends PureComponent {
       <PanelTile
         wide={4}
         title="Lagerstatus (Ledger)"
-        color="#f8fafc"
+        color={SURFACE_BASE}
         sx={{
           gridColumn: { xs: '1 / -1', sm: '1 / -1', md: 'span 4' },
           border: '1px solid',
@@ -1519,7 +1524,7 @@ class LieferungNeuPage extends PureComponent {
               </Typography>
               <TableContainer component={Paper} variant="outlined">
                 <Table size="small">
-                  <TableHead sx={{ bgcolor: '#f1f5f9' }}>
+                  <TableHead sx={{ bgcolor: SURFACE_RAISED }}>
                     <TableRow>
                       <TableCell sx={{ fontWeight: 600, py: 0.5 }}>Zeitpunkt</TableCell>
                       <TableCell sx={{ fontWeight: 600, py: 0.5 }}>Typ</TableCell>
diff --git a/src/theme/themes/default.js b/src/theme/themes/default.js
index 1747e96..2f09fce 100644
--- a/src/theme/themes/default.js
+++ b/src/theme/themes/default.js
@@ -1,17 +1,28 @@
 import { createTheme } from '@mui/material/styles';
-import { MAIN_BACKGROUND } from '../../colors';
+import {
+  MAIN_BACKGROUND,
+  NAV_BACKGROUND,
+  NAV_ITEM,
+  NAV_ITEM_ACTIVE,
+  NAV_ITEM_ACTIVE_ACCENT,
+  NAV_ITEM_ACTIVE_TEXT,
+  NAV_ITEM_HOVER,
+  NAV_ITEM_HOVER_TEXT,
+  NAV_SURFACE,
+  PRIMARY,
+  WHITE,
+} from '../../colors';
 
 const nav = {
-  background:
-    'linear-gradient(90deg, #183331 0%, #1d3a38 25%, #1a3533 60%, #17302e 100%)',
-  backgroundColor: '#1a3533',
+  background: NAV_BACKGROUND,
+  backgroundColor: NAV_SURFACE,
   mainBackground: MAIN_BACKGROUND,
-  item: '#9cb8b4',
-  itemHover: '#243f3d',
-  itemHoverText: '#d4ebe8',
-  itemActive: '#2a5a56',
-  itemActiveText: '#6ee7d8',
-  itemActiveAccent: '#2dd4bf',
+  item: NAV_ITEM,
+  itemHover: NAV_ITEM_HOVER,
+  itemHoverText: NAV_ITEM_HOVER_TEXT,
+  itemActive: NAV_ITEM_ACTIVE,
+  itemActiveText: NAV_ITEM_ACTIVE_TEXT,
+  itemActiveAccent: NAV_ITEM_ACTIVE_ACCENT,
 };
 
 export const defaultThemeId = 'default';
@@ -20,10 +31,10 @@ export function createDefaultTheme() {
   return createTheme({
     palette: {
       mode: 'light',
-      primary: { main: '#0d9488' },
+      primary: { main: PRIMARY },
       background: {
         default: nav.mainBackground,
-        paper: '#ffffff',
+        paper: WHITE,
       },
     },
     nav,
diff --git a/src/utils/textThumbnail.js b/src/utils/textThumbnail.js
index ac50701..b7890aa 100644
--- a/src/utils/textThumbnail.js
+++ b/src/utils/textThumbnail.js
@@ -1,3 +1,9 @@
+import {
+  BORDER,
+  BORDER_STRONG,
+  TEXT_BODY,
+  WHITE,
+} from '../colors';
 let encodeAvif = null;
 
 async function getAvifEncoder() {
@@ -42,20 +48,20 @@ export function renderTextToCanvas(text = '', width = 200, height = 280) {
   if (!ctx) return canvas;
 
   // Background
-  ctx.fillStyle = '#ffffff';
+  ctx.fillStyle = WHITE;
   ctx.fillRect(0, 0, width, height);
 
   // Subtle border
-  ctx.strokeStyle = '#e2e8f0';
+  ctx.strokeStyle = BORDER;
   ctx.lineWidth = 1;
   ctx.strokeRect(0.5, 0.5, width - 1, height - 1);
 
   // Top header accent line
-  ctx.fillStyle = '#cbd5e1';
+  ctx.fillStyle = BORDER_STRONG;
   ctx.fillRect(10, 8, 30, 2);
 
   // Render text lines
-  ctx.fillStyle = '#334155';
+  ctx.fillStyle = TEXT_BODY;
   ctx.font = '8px ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace';
 
   const paddingX = 10;