diff --git a/core/css/variables.scss b/core/css/variables.scss
index d12109c52988f..392291ef9d3c4 100644
--- a/core/css/variables.scss
+++ b/core/css/variables.scss
@@ -20,4 +20,6 @@ $image-login-background: '../img/background.jpg?v=1';
 
 $color-loading: #969696;
 $color-loading-dark: #bbbbbb;
-$color-box-shadow: rgba(nc-lighten($color-main-text, 20%), 0.75);
\ No newline at end of file
+$color-box-shadow: rgba(nc-lighten($color-main-text, 20%), 0.75);
+$color-border: nc-darken($color-main-background, 8%);
+