diff --git a/fastapi/encoders.py b/fastapi/encoders.py
index 873fc8d2b..2d0baee11 100644
--- a/fastapi/encoders.py
+++ b/fastapi/encoders.py
@@ -28,7 +28,7 @@ try:
     from pydantic_extra_types.color import Color
 except ImportError:
     # Fallback for Pydantic v1
-    Color = type("DummyColor", (), {})
+    Color: Type[Any]
 
 from ._compat import PYDANTIC_V2, UndefinedType, Url, _model_dump