diff --git a/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/components/Stages/Stage/Stage.js b/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/components/Stages/Stage/Stage.js
index 2497d29a46..c7447b96b3 100644
--- a/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/components/Stages/Stage/Stage.js
+++ b/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/components/Stages/Stage/Stage.js
@@ -172,7 +172,9 @@ export function Stage({
     ),
     color: hex,
   }));
-  const colorValue = colorOptions.find(({ value }) => value === colorField.value.toLowerCase());
+  // TODO: the .toUpperCase() conversion can be removed once the hex code is normalized in
+  // the admin API
+  const colorValue = colorOptions.find(({ value }) => value === colorField.value.toUpperCase());
 
   return (
     <Box ref={composedRef}>
diff --git a/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/utils/colors.js b/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/utils/colors.js
index 2133f70486..0d10447f33 100644
--- a/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/utils/colors.js
+++ b/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/utils/colors.js
@@ -27,7 +27,7 @@ export function getStageColorByHex(hex) {
 
 export function getAvailableStageColors() {
   return Object.entries(STAGE_COLORS).map(([themeColorName, name]) => ({
-    hex: lightTheme.colors[themeColorName].toLowerCase(),
+    hex: lightTheme.colors[themeColorName].toUpperCase(),
     name,
   }));
 }
diff --git a/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/utils/tests/colors.test.js b/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/utils/tests/colors.test.js
index 3589e7d0b2..73b198c4d5 100644
--- a/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/utils/tests/colors.test.js
+++ b/packages/core/admin/ee/admin/pages/SettingsPage/pages/ReviewWorkflows/utils/tests/colors.test.js
@@ -12,7 +12,7 @@ describe('Settings | Review Workflows | colors', () => {
         name: expect.any(String),
       });
 
-      expect(color.hex).toBe(color.hex.toLowerCase());
+      expect(color.hex).toBe(color.hex.toUpperCase());
     });
   });