diff --git a/themes/vanilla/assets/scss/style.scss b/themes/vanilla/assets/scss/style.scss
index 959a589..7162b17 100755
--- a/themes/vanilla/assets/scss/style.scss
+++ b/themes/vanilla/assets/scss/style.scss
@@ -1,6 +1,6 @@
 $container-width: 800px;
 $primary-color: #36e281;
-$primary-color-dark: #1dc868;
+$primary-color-dark: darken($primary-color, 10%);
 $font-heading: "Lora", serif;
 $font-body: "Raleway", serif;
 $font-code: "Inconsolata", monospace;