diff --git a/src/scss/_variables.scss b/src/scss/_variables.scss
index 4d6fa551836911916fc39ca888440b87a4c813a7..f56a8e99a5b591fd1c696147fe59fc4a6f36958d 100644
--- a/src/scss/_variables.scss
+++ b/src/scss/_variables.scss
@@ -850,6 +850,7 @@ $form-check-input-checked-bg-repeat: repeat !default;
$form-check-input-checked-bg-image: url("data:image/svg+xml,") !default;
$form-check-input-checked-bg-image-dark: url("data:image/svg+xml,") !default;
$form-check-input-checked-border-color: $input-border-color-translucent !default;
+$form-check-input-indeterminate-bg-color: var(--#{$prefix}primary) !default;
$form-check-radio-checked-bg-image: url("data:image/svg+xml,") !default;