diff --git a/app/styles/base/_buttons.scss b/app/styles/base/_buttons.scss
index 9b1f9571..7cb57540 100644
--- a/app/styles/base/_buttons.scss
+++ b/app/styles/base/_buttons.scss
@@ -25,7 +25,7 @@
     &.btn-error, &.btn-silent {
       border-color: th(base-border-color);
       background-color: transparent;
-      color: th(text-contrast-background-color);
+      color: th(text-color);
     }
 
     &:hover {
diff --git a/app/styles/base/_theme-vars.scss b/app/styles/base/_theme-vars.scss
index 8496300c..d9a308ce 100644
--- a/app/styles/base/_theme-vars.scss
+++ b/app/styles/base/_theme-vars.scss
@@ -1,7 +1,4 @@
 @function text-contrast-color($t, $bg) {
-  @if ($bg == map-get($t, background-color)) {
-    @return map-get($t, text-color);
-  }
   @if (lightness($bg) - map-get($t, color-lightness-shift) >= lightness(map-get($t, background-color))) {
     @return map-get($t, text-color);
   }
@@ -18,7 +15,6 @@
     text-semi-muted-color: mix(map-get($t, action-color), map-get($t, text-color), .5),
     text-contrast-action-color: text-contrast-color($t, map-get($t, action-color)),
     text-contrast-error-color: text-contrast-color($t, map-get($t, error-color)),
-    text-contrast-background-color: text-contrast-color($t, map-get($t, background-color)),
 
     // Borders, shadows
     base-border-color: mix(map-get($t, medium-color), map-get($t, background-color), 50%),
diff --git a/plugins/examples/rainbow-theme/plugin.css b/plugins/examples/rainbow-theme/plugin.css
index ff26b9e2..4ba3bce5 100644
--- a/plugins/examples/rainbow-theme/plugin.css
+++ b/plugins/examples/rainbow-theme/plugin.css
@@ -14,7 +14,6 @@
   --text-semi-muted-color: #424244;
   --text-contrast-action-color: #FAFAFA;
   --text-contrast-error-color: #FAFAFA;
-  --text-contrast-background-color: #424243;
   --base-border-color: gray;
   --accent-border-color: #5b5b5b;
   --light-border-color: #e2e2e2;