Color Blindness Simulator
Upload an image to see it simulated as it would appear to someone with protanopia, deuteranopia or tritanopia.
Original
Pourquoi utiliser cet outil ?
About 1 in 12 men has some form of color blindness, which can make a design unreadable if it relies only on color. This tool applies a standard color blindness simulation matrix to your image directly in your browser, so you can check it stays legible.
Why it's free
A discreet ad banner covers hosting costs — that's the whole business model. No account to create, no usage limit, no paid tier unlocking the real result. Calculations run in your browser, so your numbers, dates and text never leave your device.
How our tools work