Merge pull request #38086 from Sir-Genius/btn-link

Author: romaricpascal

scss/_buttons.scss

@@ -170,7 +170,7 @@
   --#{$prefix}btn-disabled-color: #{$btn-link-disabled-color};
   --#{$prefix}btn-disabled-border-color: transparent;
   --#{$prefix}btn-box-shadow: 0 0 0 #000; // Can't use `none` as keyword negates all values when used with multiple shadows
-  --#{$prefix}btn-focus-shadow-rgb: #{to-rgb(mix(color-contrast($primary), $primary, 15%))};
+  --#{$prefix}btn-focus-shadow-rgb: #{to-rgb(mix(color-contrast($link-color), $link-color, 15%))};
 
   text-decoration: $link-decoration;
   @if $enable-gradients {