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Color Blindness Simulator - Test Color Accessibility
Simulate how colors appear to color-blind users with Protanopia, Deuteranopia, Tritanopia, and Monochromacy vision. Upload images or test color palettes for accessibility compliance.
Last updated: 1/26/2025
Color Vision Simulation
Protanopia
Red-blind (missing L-cones)
Affects: ~1% of men, ~0.02% of women
Upload Image for Testing
Upload an image to test color accessibility
Supports JPEG, PNG, GIF, WebP (max 10MB)
Frequently Asked Questions
What types of color blindness can this tool simulate?
The tool simulates four main types: Protanopia (red-blind, ~1% of men), Deuteranopia (green-blind, ~1% of men), Tritanopia (blue-blind, ~0.01% of people), and Monochromacy (complete color blindness, very rare). Each type shows how colors appear to people with these conditions.
How accurate are the color blindness simulations?
The simulations use scientifically-based color transformation algorithms that approximate how people with different types of color vision deficiency perceive colors. While not 100% exact (individual experiences vary), they provide valuable insights for accessibility testing.
Can I test my website or app design for color accessibility?
Yes! Upload screenshots of your designs, websites, or app interfaces. The tool will show side-by-side comparisons of how your design appears to users with different types of color vision, helping you identify potential accessibility issues.
What should I do if my design fails the color blindness test?
The tool provides alternative color suggestions and highlights problematic areas. Consider using patterns, textures, icons, or labels alongside colors, increasing contrast, or choosing colors that remain distinguishable across all vision types.
How common is color blindness?
About 8% of men and 0.5% of women have some form of color vision deficiency. Red-green color blindness (Protanopia and Deuteranopia) is most common, affecting roughly 1 in 12 men and 1 in 200 women worldwide.
Can I test multiple images or color palettes at once?
Yes! The batch testing feature allows you to upload multiple images or test several color palettes simultaneously, making it easy to ensure consistency across your entire design system or brand materials.
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