diff --git a/src/browser/base/content/zen-styles/zen-theme.css b/src/browser/base/content/zen-styles/zen-theme.css
index acc8259a7..ddb6d579e 100644
--- a/src/browser/base/content/zen-styles/zen-theme.css
+++ b/src/browser/base/content/zen-styles/zen-theme.css
@@ -17,7 +17,7 @@
   /** Zen colors are generated automatically from the primary color */
   --zen-colors-primary: color-mix(in srgb, var(--zen-primary-color) 50%, black 50%);
   --zen-colors-secondary: color-mix(in srgb, var(--zen-colors-primary) 20%, white 80%);
-  --zen-colors-tertiary: color-mix(in srgb, var(--zen-primary-color) 7%, white 93%);
+  --zen-colors-tertiary: color-mix(in srgb, var(--zen-primary-color) 2%, white 98%);
 
   --zen-colors-hover-bg: color-mix(in srgb, var(--zen-primary-color) 90%, white 10%);
   --zen-colors-primary-foreground: color-mix(in srgb, var(--zen-primary-color) 80%, black 20%);