diff --git a/src/_theme.scss b/src/_theme.scss
index 1e23457..2839020 100644
--- a/src/_theme.scss
+++ b/src/_theme.scss
@@ -206,6 +206,7 @@ $lvl3: if($isDark, $base, $crust);
   --color-caret: var(--color-text);
   --color-reaction-bg: #{color.change($text, $alpha: 0.07)};
   --color-reaction-active-bg: var(--color-primary-alpha-40);
+  --color-header-bar: #{$lvl2};
   --color-header-wrapper: #{$lvl2};
   --color-header-wrapper-transparent: #{color.change($lvl2, $alpha: 0)};
   --color-label-text: #{$crust};