diff --git a/source/assets/sass/config/color/_content.scss b/source/assets/sass/config/color/_content.scss
index 004831403..f3b9332a7 100644
--- a/source/assets/sass/config/color/_content.scss
+++ b/source/assets/sass/config/color/_content.scss
@@ -33,5 +33,11 @@ $sl-color--warn: #c14e00;
 $sl-color--success: #168073;
 
 // Darker Shades of existing colors for use on a light gray background
-$sl-color--text-medium-dark: #5e6470; // darker version of pale-sky
-$sl-color--action-dark: #a12d69; // darker version of action
+$sl-color--text-medium-dark: color.adjust(
+  brand.$sl-color--pale-sky,
+  $lightness: -5%
+);
+$sl-color--action-dark: color.adjust(
+  brand.$sl-color--bouquet,
+  $lightness: -11.647%
+);