Color Blindness Simulator
Preview how your designs appear to users with color vision deficiency — 8 types, side-by-side comparison.
Upload a design or photo to simulate
Works best with UI screenshots and colorful designs
FAQs
What types of color blindness are simulated?
The tool simulates: Protanopia (red-blind), Deuteranopia (green-blind), Tritanopia (blue-blind), Protanomaly (red-weak), Deuteranomaly (green-weak), Achromatopsia (total), and Achromatomaly (near-grayscale).
Why should designers test for color blindness?
About 8% of males and 0.5% of females have some form of color vision deficiency. Designs that rely solely on color to convey information can be inaccessible to these users.
How accurate are the simulations?
The simulation uses established transformation matrices from Wickline (2000) and Viénot et al. (1999). They are widely used in accessibility research and provide a practical approximation.
Can I export all simulations at once?
Click 'Show all types' to see all 8 vision simulations together, then download each individually.