Color Blindness Simulator
See how your HSL color appears to people with protanopia, deuteranopia, and tritanopia color vision deficiencies.
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Free & Online
Normal Vision
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Protanopia
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(Red-blind)
Deuteranopia
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(Green-blind)
Tritanopia
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(Blue-blind)
Protanopia
Affects ~1% of men. Red cones (L-cones) are absent. Red appears dark, and red-green distinction is lost.
Deuteranopia
Affects ~1% of men. Green cones (M-cones) are absent. Most common form of color blindness.
Tritanopia
Affects ~0.003% of the population. Blue cones (S-cones) are absent. Blue-yellow distinction is impaired.
Color of the Day
May 08, 2026
Vivid Cyan
HSL(175, 83%, 59%)
#40EDDF
Recent Activity
Simulated Tritanopia for HSL(243, 90%, 52%)
8m ago
Simulated Deuteranopia for HSL(266, 40%, 65%)
26m ago
Did You Know?
Traffic lights work for color-blind people because of position (top/bottom), not color alone.
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