Tool · Color blindness simulator

Color blindness simulator.

Paste any palette — see it through all four color vision deficiency types. Catch palette pairs that collapse to the same color for ~5% of your audience.

Adjust:

Normal vision

What most people see

Protanopia

Red-blind (~1.3% of men)

Protanomaly

Red-weak (~1.3% of men)

Deuteranopia

Green-blind (~1.2% of men)

Deuteranomaly

Green-weak (~5% of men — the most common CVD)

Tritanopia

Blue-blind (rare)

Tritanomaly

Blue-weak (rare)

Achromatopsia

No color vision (very rare)
#A7C4BCand#F2B845become indistinguishable under achromatopsia (simulated ΔE 0.3)

Achromatomaly

Partial color loss (very rare)
About these simulations → Uses standard SVG color matrix transforms approximating Brettel's published CVD models. Approximate but well-aligned with research-grade simulators. For production sign-off, validate with people who actually have CVD.