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Color Blindness Sim

Preview colors as color-blind users see

Colors (HEX, one per line or separated by spaces/commas)

Pick and add

Original

Protanopia (red-blind)

Deuteranopia (green-blind)

Tritanopia (blue-blind)

Achromatopsia (monochromacy)

#4f46e5

#4848e5

#4949e5

#006d6d

#606060

#22c55e

#b6b65f

#a6a664

#4cbcbc

#acacac

#ef4444

#7a7a42

#9a9a35

#ef4444

#848484

#f59e0b

#b1b103

#c1c100

#fa9595

#b1b1b1

#0ea5e9

#9898e9

#8a8aea

#00b0b0

#9b9b9b

Paste a palette and scan each column: if two colors collapse into nearly the same swatch, users with that deficiency cannot tell them apart by color alone. Add shape, icon, or text labels.

Pipeline: sRGB → linearize (remove gamma) → LMS cone response → dichromat projection → back to linear RGB → re-encode gamma. Skipping gamma correction gives visibly wrong results.

All processing happens locally in your browser. Your data is never uploaded to a server.