Color Blindness Simulator (8 Types)
Around 8% of men and 0.5% of women have some color vision deficiency. Preview how your images and palettes appear under 8 CVD types — from protanopia to achromatopsia — so you never ship a UI that relies on color alone.
Tool interface
Simulations
Introduction
Color vision deficiency is common, yet most UIs are only checked with normal vision. Simulating CVD locally lets designers catch red/green and blue/yellow confusions before release.
How it works
- Images are drawn to a Canvas and each pixel is transformed by a CVD matrix.
- Palettes are converted hex → RGB → matrix → hex per type.
- Eight labeled previews render side by side.
Privacy
All pixel processing uses Canvas locally. Images are never uploaded. No account, no API key.
Limitations
- Matrices are mathematical approximations; individual perception varies.
- Does not model cataracts, glaucoma, or other non-CVD vision conditions.
FAQ
What is the most common CVD?
Deuteranomaly (reduced green sensitivity) is the most common, followed by protanomaly.
Is my image uploaded?
No. Processing happens entirely in your browser via Canvas.