diff --git a/src/config.css.ts b/src/config.css.ts
index df04b9096..5d63c34ab 100644
--- a/src/config.css.ts
+++ b/src/config.css.ts
@@ -5,7 +5,7 @@ export const onLightFontWeight = createTheme(config.fontWeight, {
   W100: '100',
   W200: '200',
   W300: '300',
-  W400: '420',
+  W400: '400',
   W500: '500',
   W600: '600',
   W700: '700',
@@ -17,10 +17,10 @@ export const onDarkFontWeight = createTheme(config.fontWeight, {
   W100: '100',
   W200: '200',
   W300: '300',
-  W400: '350',
-  W500: '450',
-  W600: '550',
-  W700: '650',
-  W800: '750',
-  W900: '850',
+  W400: '400',
+  W500: '500',
+  W600: '600',
+  W700: '700',
+  W800: '800',
+  W900: '900',
 });