diff --git a/tests/test_contrast.py b/tests/test_contrast.py
index d6955b1..cba41ac 100644
--- a/tests/test_contrast.py
+++ b/tests/test_contrast.py
@@ -52,6 +52,8 @@ def color(expr: str) -> tuple:
         return (0, 0, 0, 0.0)
     if expr == "black":
         return (0, 0, 0, 1.0)
+    if expr == "white":
+        return (255, 255, 255, 1.0)
     if expr.startswith("#"):
         h = expr[1:] if len(expr) == 7 else "".join(c * 2 for c in expr[1:])
         return (int(h[0:2], 16), int(h[2:4], 16), int(h[4:6], 16), 1.0)