diff --git a/src/style/variables.scss b/src/style/variables.scss
index f3751e8..ddade6d 100644
--- a/src/style/variables.scss
+++ b/src/style/variables.scss
@@ -2,6 +2,7 @@ $form-text-color: #{"var(--form-text-color, #495057)"};
 $form-border-color: #{"var(--form-border-color, #ced4da)"};
 $form-bg-color: #{"var(--form-bg-color, #fff)"};
 
+$readonly-bg-color: #{"var(--form-readonly-bg-color, #e9ecef)"};
 $form-select-hover-color:#{"var(--form-select-hover-color, #ccc)"};
 $form-select-hover-text-color:#{"var(--form-select-hover-text-color, #000)"};