Free Color Blindness Simulator
See how colors and images appear to people with color vision deficiency. Simulate Protanopia, Deuteranopia, Tritanopia, and Achromatopsia. No signup required.
100% free — images stay on your device
Simulation Results
Original
#3B82F6
Protanopia
#5A5ADA
Deuteranopia
#5650D3
Tritanopia
#3FC4BF
Achromatopsia
#7A7A7A
Accessibility Tips
- Use sufficient color contrast (4.5:1 minimum)
- Don't rely on color alone to convey information
- Add patterns or labels alongside color coding
- Test your designs with color blindness simulators
Free Color Blindness Simulator Features
Test your colors against 4 types of color blindness
Color Mode
Enter a hex color and see how it appears to each type of color blindness.
Image Mode
Upload an image and see it transformed through each color vision type.
Design Tips
Accessibility recommendations for designing inclusive color palettes.
4 CVD Types
Protanopia (no red), Deuteranopia (no green), Tritanopia (no blue), Achromatopsia (no color).
FAQ
How common is color blindness?
About 8% of men and 0.5% of women have some form of color vision deficiency. Red-green (Deuteranopia/Protanopia) is the most common.
How should I design for color blindness?
Don't rely on color alone to convey information. Use patterns, icons, labels, and sufficient contrast. Test with this simulator.
Are the simulations accurate?
They use standard color transformation matrices that approximate how each type of CVD perceives color. They're widely used in accessibility tools.
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