diff --git a/web/app/components/workflow/nodes/_base/components/variable/constant-field.tsx b/web/app/components/workflow/nodes/_base/components/variable/constant-field.tsx
index 52d2675510..0adfa3c9fb 100644
--- a/web/app/components/workflow/nodes/_base/components/variable/constant-field.tsx
+++ b/web/app/components/workflow/nodes/_base/components/variable/constant-field.tsx
@@ -50,7 +50,7 @@ const ConstantField: FC<Props> = ({
       {schema.type === FormTypeEnum.textNumber && (
         <input
           type='number'
-          className='h-8 w-full overflow-hidden rounded-lg bg-gray-100 p-2 text-[13px] font-normal leading-8 text-gray-900 placeholder:text-gray-400 focus:outline-none'
+          className='h-8 w-full overflow-hidden rounded-lg bg-workflow-block-parma-bg p-2 text-[13px] font-normal leading-8 text-text-secondary placeholder:text-gray-400 focus:outline-none'
           value={value}
           onChange={handleStaticChange}
           readOnly={readonly}