diff --git a/res/css/views/auth/_InteractiveAuthEntryComponents.scss b/res/css/views/auth/_InteractiveAuthEntryComponents.scss
index 972acdc2ab..85007aeecb 100644
--- a/res/css/views/auth/_InteractiveAuthEntryComponents.scss
+++ b/res/css/views/auth/_InteractiveAuthEntryComponents.scss
@@ -49,7 +49,7 @@ limitations under the License.
 }
 
 .mx_InteractiveAuthEntryComponents_termsSubmit:disabled {
-    background-color: $accent-color-50pct;
+    background-color: $accent-color-darker;
     cursor: default;
 }
 
diff --git a/res/themes/light/css/_light.scss b/res/themes/light/css/_light.scss
index 361f6fa408..3ef2ddc97f 100644
--- a/res/themes/light/css/_light.scss
+++ b/res/themes/light/css/_light.scss
@@ -28,7 +28,7 @@ $focus-bg-color: #dddddd;
 
 // button UI (white-on-green in light skin)
 $accent-fg-color: #ffffff;
-$accent-color-50pct: #92caad;
+$accent-color-darker: #92caad;
 $accent-color-alt: #238CF5;
 
 $selection-fg-color: $primary-bg-color;