diff --git a/addons/website_sale/models/product_ribbon.py b/addons/website_sale/models/product_ribbon.py
index 54424354fdd..b8578ac6bf8 100644
--- a/addons/website_sale/models/product_ribbon.py
+++ b/addons/website_sale/models/product_ribbon.py
@@ -17,3 +17,15 @@ class ProductRibbon(models.Model):
     bg_color = fields.Char(string='Ribbon background color', required=False)
     text_color = fields.Char(string='Ribbon text color', required=False)
     html_class = fields.Char(string='Ribbon class', required=True, default='')
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            if 'bg_color' in vals and not '!important' in vals['bg_color']:
+                vals['bg_color'] += ' !important'
+        return super().create(vals_list)
+
+    def write(self, data):
+        if 'bg_color' in data and not '!important' in data['bg_color']:
+            data['bg_color'] += ' !important'
+        return super().write(data)