diff --git a/frontend/src/ts/elements/settings/theme-picker.ts b/frontend/src/ts/elements/settings/theme-picker.ts
index db430bda4a44..a0fccef20127 100644
--- a/frontend/src/ts/elements/settings/theme-picker.ts
+++ b/frontend/src/ts/elements/settings/theme-picker.ts
@@ -86,6 +86,8 @@ function updateColors(
     }
   }
 
+  color = color.replace("##", "#");
+
   $(".colorConverter").css("color", color);
   const hexColor: string | undefined = Colors.rgbStringtoHex(
     $(".colorConverter").css("color")