Color Blindness Simulation
Protanopia · deuteranopia · tritanopia · achromatopsia — all four types side by side
Simulate protanopia, deuteranopia, and tritanopia together
This color blindness simulation page shows how the same design looks under all major CVD types at once. Upload a chart, UI screenshot, or marketing asset and compare protanopia, deuteranopia, and tritanopia filters without switching tabs.
Simulations use the peer-reviewed Machado, Oliveira & Fernandes (2009) matrices—the same methodology documented on our methodology page. For URL testing and WCAG contrast checks, use the full color blind simulator.