diff --git a/sass/_vars.scss b/sass/_vars.scss
index a92eefccc..2e584d1da 100644
--- a/sass/_vars.scss
+++ b/sass/_vars.scss
@@ -77,4 +77,5 @@
     --tooltip-bg: #272727;
     --focus-border: #316dca;
     --focus-shadow: #194380;
+    color-scheme: dark;
 }