Add Color comparison method (#3646)

* Add Color comparison method

* add changelog

* switch to public attribute

* compare rgb tuple

Co-authored-by: Samuel Colvin <s@muelcolvin.com>

changes/3646-aminalaee.md

@@ -0,0 +1 @@
+Add comparison method for `Color` class.

pydantic/color.py

@@ -198,6 +198,9 @@ class Color(Representation):
     def __repr_args__(self) -> 'ReprArgs':
         return [(None, self.as_named(fallback=True))] + [('rgb', self.as_rgb_tuple())]  # type: ignore
 
+    def __eq__(self, other: Any) -> bool:
+        return isinstance(other, Color) and self.as_rgb_tuple() == other.as_rgb_tuple()
+
 
 def parse_tuple(value: Tuple[Any, ...]) -> RGBA:
     """

tests/test_color.py

@@ -184,3 +184,12 @@ def test_str_repr():
     assert repr(Color('red')) == "Color('red', rgb=(255, 0, 0))"
     assert str(Color((1, 2, 3))) == '#010203'
     assert repr(Color((1, 2, 3))) == "Color('#010203', rgb=(1, 2, 3))"
+
+
+def test_eq():
+    assert Color('red') == Color('red')
+    assert Color('red') != Color('blue')
+    assert Color('red') != 'red'
+
+    assert Color('red') == Color((255, 0, 0))
+    assert Color('red') != Color((0, 0, 255))