fix: all colours in 10 theme palettes pass WCAG 1.4.11 non-text contrast (≥ 3:1) against the default light and dark backgrounds.

Author: junedchhipa

src/utils/ThemePalettes.js

@@ -5,16 +5,18 @@
  */
 export function getThemePalettes() {
   return {
-    palette1: ['#008FFB', '#00E396', '#FEB019', '#FF4560', '#775DD0'],
-    palette2: ['#3F51B5', '#03A9F4', '#4CAF50', '#F9CE1D', '#FF9800'],
-    palette3: ['#33B2DF', '#546E7A', '#D4526E', '#13D8AA', '#A5978B'],
-    palette4: ['#4ECDC4', '#C7F464', '#81D4FA', '#FD6A6A', '#546E7A'],
-    palette5: ['#2B908F', '#F9A3A4', '#90EE7E', '#FA4443', '#69D2E7'],
-    palette6: ['#449DD1', '#F86624', '#EA3546', '#662E9B', '#C5D86D'],
-    palette7: ['#D7263D', '#1B998B', '#2E294E', '#F46036', '#E2C044'],
-    palette8: ['#662E9B', '#F86624', '#F9C80E', '#EA3546', '#43BCCD'],
-    palette9: ['#5C4742', '#A5978B', '#8D5B4C', '#5A2A27', '#C4BBAF'],
-    palette10: ['#A300D6', '#7D02EB', '#5653FE', '#2983FF', '#00B1F2'],
+    // All colours pass WCAG 1.4.11 non-text contrast (≥ 3:1) against the
+    // default light (#fff) and dark (#293450) theme backgrounds.
+    palette1:  ['#008FFB', '#00A86F', '#CA8501', '#FF4560', '#846DD5'],
+    palette2:  ['#6978CB', '#039DE2', '#49A84D', '#B39105', '#D68000'],
+    palette3:  ['#209FCC', '#648291', '#D4526E', '#0FA783', '#A19285'],
+    palette4:  ['#2FA59D', '#73A20B', '#099DE1', '#FD5D5D', '#648291'],
+    palette5:  ['#2B908F', '#F56566', '#2EAB16', '#FA4443', '#1EA2BD'],
+    palette6:  ['#449DD1', '#F86624', '#EA3A4A', '#9C63D1', '#899E2A'],
+    palette7:  ['#DF475B', '#1B998B', '#7E75B7', '#F46036', '#B1911B'],
+    palette8:  ['#9C63D1', '#F86624', '#B38F04', '#EA3A4A', '#2FA2B3'],
+    palette9:  ['#98776F', '#A19285', '#A8705E', '#BA6560', '#A0927F'],
+    palette10: ['#C91EFF', '#A94BFD', '#6C6AFE', '#2983FF', '#009ED8'],
     // CVD-safe palettes (Wong 2011 / IBM design)
     cvdDeuteranopia: ['#0072B2', '#E69F00', '#56B4E9', '#009E73', '#F0E442', '#D55E00', '#CC79A7'],
     cvdProtanopia: ['#0077BB', '#EE7733', '#009988', '#EE3377', '#BBBBBB', '#33BBEE', '#CC3311'],