Color & Design Tools
Color Blindness Simulator
Simulate protanopia, deuteranopia, tritanopia, and achromatopsia on any color or image.
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What is CB Simulator?
About 8% of men and 0.5% of women have some form of color vision deficiency. This simulator applies color-blindness transformation matrices to show how your design looks.
How it works
We convert RGB to LMS color space, apply the deficiency-specific transformation matrix, then convert back to show the simulated view.
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Type or paste any realistic input — the tool computes the result locally and instantly.
Common mistakes
Expecting a server round-trip
Nothing is uploaded — every tool in this category runs entirely in your browser.