diff --git a/gtk/src/Plano/gtk-3.0/_common.scss b/gtk/src/Plano/gtk-3.0/_common.scss
index 6271128..582471c 100644
--- a/gtk/src/Plano/gtk-3.0/_common.scss
+++ b/gtk/src/Plano/gtk-3.0/_common.scss
@@ -221,7 +221,11 @@ label {
     selection { @extend %selected_items_backdrop; }
   }
 
-  &.error { color: $error_color; }
+  &.error {
+    color: $error_color;
+    &:disabled { color: $insensitive_fg_color; }
+    &:disabled:backdrop { color: $backdrop_insensitive_color; }
+  }
 }
 
 .dim-label {
diff --git a/gtk/src/Plano/gtk-3.0/gtk-alt-header.css b/gtk/src/Plano/gtk-3.0/gtk-alt-header.css
index 58cfc5d..4b6d7a5 100644
--- a/gtk/src/Plano/gtk-3.0/gtk-alt-header.css
+++ b/gtk/src/Plano/gtk-3.0/gtk-alt-header.css
@@ -56,6 +56,10 @@ button label:disabled:backdrop { color: inherit; }
 
 label.error { color: #cc0000; }
 
+label.error:disabled { color: #787979; }
+
+label.error:disabled:backdrop { color: #c3c6c9; }
+
 .dim-label, .titlebar:not(headerbar) .subtitle, headerbar .subtitle, label.separator { opacity: 0.55; text-shadow: none; }
 
 assistant .sidebar { background-color: #ffffff; border-top: 1px solid #c3c6c9; }
diff --git a/gtk/src/Plano/gtk-3.0/gtk-dark.css b/gtk/src/Plano/gtk-3.0/gtk-dark.css
index 87696b8..6dea5e3 100644
--- a/gtk/src/Plano/gtk-3.0/gtk-dark.css
+++ b/gtk/src/Plano/gtk-3.0/gtk-dark.css
@@ -56,6 +56,10 @@ button label:disabled:backdrop { color: inherit; }
 
 label.error { color: #cc0000; }
 
+label.error:disabled { color: #a3a6a5; }
+
+label.error:disabled:backdrop { color: #566164; }
+
 .dim-label, .titlebar:not(headerbar) .subtitle, headerbar .subtitle, label.separator { opacity: 0.55; text-shadow: none; }
 
 assistant .sidebar { background-color: #232729; border-top: 1px solid #2a2e30; }
diff --git a/gtk/src/Plano/gtk-3.0/gtk.css b/gtk/src/Plano/gtk-3.0/gtk.css
index f607fe0..f231323 100644
--- a/gtk/src/Plano/gtk-3.0/gtk.css
+++ b/gtk/src/Plano/gtk-3.0/gtk.css
@@ -56,6 +56,10 @@ button label:disabled:backdrop { color: inherit; }
 
 label.error { color: #cc0000; }
 
+label.error:disabled { color: #787979; }
+
+label.error:disabled:backdrop { color: #c3c6c9; }
+
 .dim-label, .titlebar:not(headerbar) .subtitle, headerbar .subtitle, label.separator { opacity: 0.55; text-shadow: none; }
 
 assistant .sidebar { background-color: #ffffff; border-top: 1px solid #c3c6c9; }