Color Blindness Simulator
Preview your palette for protanopia, deuteranopia, tritanopia.
What is Color Blindness Simulator?
See how your color choices look to users with the most common types of color vision deficiency. Use this to catch accessibility issues before they reach your users.
Frequently asked questions
+What types of color blindness are simulated?
Protanopia (red-deficient), deuteranopia (green-deficient), tritanopia (blue-deficient), and achromatopsia (monochrome).
+How accurate is the simulation?
We use the Brettel/Viénot matrices applied in linear sRGB. It's the same model most accessibility tooling uses.
+What should I do if my palette fails?
Add differentiating cues beyond color (icons, text labels, patterns) and increase contrast between adjacent categories.
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