What is a Color Blindness Simulator?
A color blindness simulator applies the transform a color vision deficiency imposes on color, so you can see what a design looks like to someone who cannot distinguish certain hues. The most common forms — protanopia and deuteranopia — affect red and green, making otherwise distinct colors collapse together.
Common Uses for Color Blindness Simulator
- Check whether a red/green chart legend is still readable for colour-blind users
- Test a status indicator that relies on color alone
- See how a brand palette shifts for someone with deuteranopia
Frequently Asked Questions
How common is color blindness?
Roughly 1 in 12 men and 1 in 200 women have some form of red–green colour vision deficiency, making it the most common form by far.
What is the difference between the types?
Protanopia affects red perception, deuteranopia green, and tritanopia blue. Anomaly variants are milder versions. Achromatopsia is complete colour blindness.
Does the simulation change my image?
No. It renders the transform on screen only; your original file is untouched and never uploaded.
How do I fix a problem it reveals?
Never rely on color alone. Add labels, patterns or icons so meaning survives even when two colors look the same.