Designing for Everyone: A Practical Guide to the Colorblind Simulator

Color is one of the fastest ways to communicate — until it isn't. If a status indicator, chart, or call-to-action only works because of its color, a meaningful share of your audience will miss the message entirely.

See your design the way they do

Colorblind Simulator previews any image under common types of color vision deficiency — deuteranopia, protanopia, and tritanopia — so you can check a design before it ships, not after a user reports a problem.

Pair color with contrast

Once you know where a design might fall apart, Contrast Checker helps you pick a replacement combination that stays readable for everyone, not just for typical color vision.

Build palettes that hold up

Start new projects in Palettes and refine them with Color Mixer, then run the result back through the Colorblind Simulator — it's much cheaper to fix a palette at this stage than after it's been applied across a whole product.

A five-minute habit

Add a Colorblind Simulator pass to your pre-launch checklist alongside spell-check and link-checking. It takes a few minutes and can catch issues that would otherwise only surface from real users.