Free Color Blindness Simulator
Test how your designs appear to colorblind users with our free tool. Simulate 8 types of color vision deficiency.
- 8 color blindness types
- Image upload support
- Side-by-side comparison
- Color palette testing
- Accessibility recommendations
Frequently Asked Questions
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 (deuteranopia/protanopia) is most common.
How do I design for color blindness?
Don't rely on color alone to convey meaning. Use patterns, icons, labels, and sufficient contrast. Test your designs with simulators like this one.
What colors are problematic for colorblind users?
Red/green combinations are hardest for most colorblind users. Blue/yellow works better. Always pair colors with other visual indicators like shapes or text.