Colour Blindness Simulator

See any picture through protanopia, deuteranopia, tritanopia or total colour blindness.

Design & colourAccessibilityColourVision
Colour Blindness Simulator screenshot
Colour Blindness Simulator

Simulation uses the Machado, Oliveira & Fernandes (2009) severity-1.0 model for dichromats, blended toward the original image by the strength slider. Roughly 1 in 12 men and 1 in 200 women have some form of colour vision deficiency.

Original
Simulated
Download PNGPick an image, then press Simulate.
Test swatches (the classic Ishihara-style plate idea)
Details

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