diff --git a/packages/twenty-shared/src/application/utils/getDefaultColorForCustomObject.util.ts b/packages/twenty-shared/src/application/utils/getDefaultColorForCustomObject.util.ts
index 6794eefd4fd..a5dce364b38 100644
--- a/packages/twenty-shared/src/application/utils/getDefaultColorForCustomObject.util.ts
+++ b/packages/twenty-shared/src/application/utils/getDefaultColorForCustomObject.util.ts
@@ -1,8 +1,11 @@
-import { MAIN_COLOR_NAMES } from '../../constants/MainColorNames';
+import {
+  MAIN_COLOR_NAMES,
+  type ThemeColorName,
+} from '../../constants/MainColorNames';
 
 export const getDefaultColorForCustomObject = (
   nameSingular: string,
-): string => {
+): ThemeColorName => {
   const customObjectColors = MAIN_COLOR_NAMES.filter(
     (color): color is Exclude<(typeof MAIN_COLOR_NAMES)[number], 'gray'> =>
       color !== 'gray',
diff --git a/packages/twenty-shared/src/constants/MainColorNames.ts b/packages/twenty-shared/src/constants/MainColorNames.ts
index 097aa482c55..c5186b4e2f7 100644
--- a/packages/twenty-shared/src/constants/MainColorNames.ts
+++ b/packages/twenty-shared/src/constants/MainColorNames.ts
@@ -25,3 +25,5 @@ export const MAIN_COLOR_NAMES = [
   'brown',
   'gray',
 ] as const;
+
+export type ThemeColorName = (typeof MAIN_COLOR_NAMES)[number];
diff --git a/packages/twenty-shared/src/constants/index.ts b/packages/twenty-shared/src/constants/index.ts
index 0a76565ae71..8ccb7a88ee6 100644
--- a/packages/twenty-shared/src/constants/index.ts
+++ b/packages/twenty-shared/src/constants/index.ts
@@ -29,6 +29,7 @@ export { FILES_FIELD_MAX_NUMBER_OF_VALUES } from './FilesFieldMaxNumberOfValues'
 export { GROUP_BY_DATE_GRANULARITY_THAT_REQUIRE_TIME_ZONE } from './GroupByDateGranularityThatRequireTimeZone';
 export { IANA_TIME_ZONES } from './IanaTimeZones';
 export { LABEL_IDENTIFIER_FIELD_METADATA_TYPES } from './LabelIdentifierFieldMetadataTypes';
+export type { ThemeColorName } from './MainColorNames';
 export { MAIN_COLOR_NAMES } from './MainColorNames';
 export { MULTI_ITEM_FIELD_DEFAULT_MAX_VALUES } from './MultiItemFieldDefaultMaxValues';
 export { MULTI_ITEM_FIELD_MIN_MAX_VALUES } from './MultiItemFieldMinMaxValues';
diff --git a/packages/twenty-ui/src/theme/constants/MainColorNames.ts b/packages/twenty-ui/src/theme/constants/MainColorNames.ts
index 36b4d812cb2..2a3597d55f7 100644
--- a/packages/twenty-ui/src/theme/constants/MainColorNames.ts
+++ b/packages/twenty-ui/src/theme/constants/MainColorNames.ts
@@ -1,5 +1,5 @@
-import { MAIN_COLORS_LIGHT } from './MainColorsLight';
+import { MAIN_COLOR_NAMES, type ThemeColorName } from 'twenty-shared/constants';
 
-export const MAIN_COLOR_NAMES = Object.keys(MAIN_COLORS_LIGHT) as ThemeColor[];
+export { MAIN_COLOR_NAMES };
 
-export type ThemeColor = keyof typeof MAIN_COLORS_LIGHT;
+export type ThemeColor = ThemeColorName;
diff --git a/packages/twenty-ui/src/theme/constants/MainColorsLight.ts b/packages/twenty-ui/src/theme/constants/MainColorsLight.ts
index 4a00386d134..df49e9ab70f 100644
--- a/packages/twenty-ui/src/theme/constants/MainColorsLight.ts
+++ b/packages/twenty-ui/src/theme/constants/MainColorsLight.ts
@@ -1,7 +1,8 @@
 import * as RadixColors from '@radix-ui/colors';
+import type { ThemeColorName } from 'twenty-shared/constants';
 import { GRAY_SCALE_LIGHT } from './GrayScaleLight';
 
-export const MAIN_COLORS_LIGHT = {
+export const MAIN_COLORS_LIGHT: Record<ThemeColorName, string> = {
   // Reds
   red: RadixColors.redP3.red9,
   ruby: RadixColors.rubyP3.ruby9,