diff --git a/egui_node_graph/src/color_hex_utils.rs b/egui_node_graph/src/color_hex_utils.rs
index e846f0a..0479a8c 100644
--- a/egui_node_graph/src/color_hex_utils.rs
+++ b/egui_node_graph/src/color_hex_utils.rs
@@ -88,7 +88,7 @@ mod tests {
         );
         assert_eq!(
             color_to_hex(Color32::from_rgba_premultiplied(226, 226, 226, 119)),
-            "e2e2e277".to_string()
+            "#e2e2e277".to_string()
         );
     }
 }