Color Blindness Simulator
Preview how your colors look for people with protanopia, deuteranopia, tritanopia, and other color vision deficiencies.
Normal Vision
Normal Vision — Standard color vision
Full Comparison
| Vision Type | |||||
| Normal Vision | |||||
| Protanopia | |||||
| Deuteranopia | |||||
| Tritanopia | |||||
| Achromatopsia | |||||
| Protanomaly | |||||
| Deuteranomaly |
Frequently Asked Questions
What types of color blindness are simulated?
The tool simulates Protanopia (no red cones), Deuteranopia (no green cones), Tritanopia (no blue cones), Achromatopsia (total color blindness), plus Protanomaly and Deuteranomaly (reduced sensitivity variants).
How accurate is the simulation?
The simulation uses the standard Vienot/Brettel color transformation matrices, which are widely used in accessibility tools. Results are a close approximation — real color vision is individual and more complex.
Why should designers test for color blindness?
About 8% of males and 0.5% of females have some form of color vision deficiency. Testing ensures your UI is readable for everyone — especially important for status indicators, charts, and data visualization.