How does the color blindness safe palette checker work?

The tool uses scientifically accurate color transformation matrices to simulate how your palette colors appear to people with different types of color blindness. It then calculates color distances between all color pairs to identify combinations that may become indistinguishable. The analysis covers 8 different types of color vision deficiency using industry-standard algorithms.

What makes a palette 'safe' for color blindness?

A safe palette maintains sufficient color differences across all types of color vision deficiency. We look for minimum color distances of 50 units and adequate luminance variation. For complete color blindness (achromatopsia), we ensure sufficient brightness differences between colors. The tool considers both hue differences and brightness/contrast relationships.

Which types of color blindness are tested?

We test all major types: Protanopia (red-blind), Protanomaly (red-weak), Deuteranopia (green-blind), Deuteranomaly (green-weak), Tritanopia (blue-blind), Tritanomaly (blue-weak), Achromatopsia (complete color blindness), and Achromatomaly (partial color blindness). Each type uses specific transformation matrices based on color science research.

Can I test palettes with more than 20 colors?

The current limit is 20 colors to ensure optimal performance and clear analysis results. Large palettes can be overwhelming and harder to make accessible. We recommend focusing on core brand colors or key functional colors in your design system. You can test subsets of larger palettes or prioritize your most important colors.

How accurate are the simulation results?

Our simulations use the same mathematical models employed by professional accessibility tools and color science research. While no simulation can perfectly replicate individual experiences, these scientific matrices provide highly accurate approximations. However, simulation should complement, not replace, testing with real users when possible.

What should I do if my palette fails the color blindness test?

If your palette shows safety issues, you can: (1) Increase color distances between problematic color pairs, (2) Add more luminance variation, (3) Consider alternative color schemes, (4) Use patterns or textures in addition to colors, (5) Re-test after modifications. The tool provides specific warnings to guide your improvements.

Color Blindness Safe Palette Checker

Generate and validate color palettes that work for all types of color blindness including protanopia, deuteranopia, and tritanopia. Ensure your color schemes are accessible and inclusive for everyone with comprehensive palette safety testing using scientific color transformation matrices.

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palette

accessibility

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Enter colors separated by commas (max 20 colors). Supports HEX format (#RRGGBB)

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How it works: Tests your color palette against 8 types of color vision deficiency by simulating how colors appear to affected users and checking if any pairs become indistinguishable.

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