Colour vision deficiency simulator

This page aims to give you a rough idea of what people with different colour vision see.

Unmodified
Simulated protanomaly (weak red)
Simulated deuteranomaly (weak green)
Simulated tritanomaly (weak blue)

This is based on the method described in A Physiologically-based Model for Simulation of Color Vision Deficiency.

To simulate a colour vision deficiency, the (r,g,b) vector for each pixel is multiplied by a matrix representing the eye's response in each kind of colour receptor.