See how a color appears to people with different types of color vision deficiency. Protanopia and deuteranopia affect red-green perception (the most common forms, affecting ~8% of men). Tritanopia affects blue-yellow perception. Achromatopsia is complete absence of color vision. Use this when designing to ensure your palette works for all users.
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Protanopia
Red-blind (~1% of men)
Deuteranopia
Green-blind (~1% of men)
Tritanopia
Blue-blind (rare)
Achromatopsia
No color vision (very rare)
Simulation is approximate. Actual perception varies by individual.