diff --git a/src/scss/layout/_core.scss b/src/scss/layout/_core.scss
index 0db6163d70..b28ab4e6e1 100644
--- a/src/scss/layout/_core.scss
+++ b/src/scss/layout/_core.scss
@@ -51,7 +51,7 @@ body {
   --#{$variable-prefix}theme-boxed-width: #{map-get($container-max-widths, xxl)};
 
   @include media-breakpoint-up(md) {
-    background: $gray-200 linear-gradient(to right, rgba(#fff, .1), transparent) fixed;
+    background: $dark linear-gradient(to right, rgba(#fff, .1), transparent) fixed;
     padding: 1rem;
     --#{$variable-prefix}theme-boxed-border-radius: #{$border-radius};
   }