Color Blindness Simulator — free online
You pick a nice pair of colors for a button or a chart, and they look fine to you. But a friend says he can't tell them apart. Roughly one in twelve men sees color differently, so the contrast you trust may vanish for them. We added a free tool that lets you check it — Color Blindness Simulator — right in your browser.
What it does
You type in one or more HEX colors, and it shows you how each one looks to people with the three most common kinds of color vision deficiency. That way you can spot, before you publish, where two colors blur into one.
Nothing leaves your device
It all runs in your browser. Your colors are not uploaded anywhere and nothing is saved. When you close the tab, it's gone.
How to use it
- Open Color Blindness Simulator and type in your HEX colors, one or more.
- Look at the previews for each type of color blindness.
- Adjust any colors that are too close, and copy the ones that work.
It's free with no limit. There are more small tools on the Apps page.