See how your images appear to people with color vision deficiency
Click to upload or drag & drop
Supports JPG, PNG, WebP
Cannot perceive red light. Red appears dark, and red-green distinctions are lost.
Cannot perceive green light. The most common form of red-green color blindness.
Cannot perceive blue light. Blue-yellow distinctions are affected. Very rare.
Total color blindness. Only shades of gray are visible. Extremely rare.
This tool helps designers and developers check how their visuals appear to people with color vision deficiency. About 8% of men and 0.5% of women worldwide have some form of color blindness. Using this simulator ensures your designs are accessible to everyone.
We apply color transformation matrices to each pixel of your image using HTML5 Canvas. These matrices simulate how each type of color blindness affects color perception. All processing happens locally in your browser.