Free Web Design Tool
Free Color Blindness Simulator — See exactly how it will look or behave before you ship. No signup, no spreadsheets.
Compare a few color blindness versions and pick the strongest before you commit one to production.
Walk a client or manager through a color blindness change with a real preview before you push it live.
Use the Color Blindness Simulator on a competitor's URL to see how their color blindness renders in the wild.
Spot truncation, contrast, or layout issues with color blindness that only appear once the page is actually drawn.
Color blindness simulators show how your design looks to users with the most common forms of color vision deficiency (protanopia, deuteranopia, tritanopia, achromatopsia). Use it to make sure critical information isn't conveyed by color alone.
We update the Color Blindness Simulator when platforms change how they render color blindness. If you spot a difference between our preview and the real thing, let us know.
Yes. Paste each variation in turn and compare them visually before deciding which color blindness to publish.
Yes. The Color Blindness Simulator renders color blindness the same way the target platform does, so the preview is what your audience will see in production.
Yes. No signup, no limits, no email gate. Use the Color Blindness Simulator as often as you need.
No. This tool runs entirely in your browser. Nothing you enter is sent to a server, saved, or shared with anyone.
Please do. We're happy for marketers, agencies, and educators to link to this page so their readers can use the Color Blindness Simulator here.
Want an agency that hits the numbers this tool helps you measure? Suff Digital Web Design & Development