Color Blindness Simulator

Preview protan, deutan, tritan & mono vision.

See how an image, chart, or UI looks to people with color vision deficiency. Choose the type — protan (red), deutan (green), tritan (blue), or monochromacy — and drag the severity from mild color-weakness to full color-blindness. Compare side by side or view every type at once. Uses Machado (2009) simulation in linear RGB, entirely in your browser.

Processes your input on your device without uploading it. Libraries or models may need downloading. No site account is required.