Color blindness simulator
Check how a palette or a picture looks with the common kinds of color blindness, and see which colors get confused. Nothing is uploaded.
Every color stays easy to tell apart.
Every color stays easy to tell apart.
Every color stays easy to tell apart.
Every color stays easy to tell apart.
Sample design
These are approximations built to help you check that nothing depends on color alone. Real vision varies from person to person. Your image never leaves your device.
Frequently asked questions
Which kinds of color blindness does it show?
Protanopia and deuteranopia (red and green confusion, together the most common), tritanopia (blue and yellow confusion) and achromatopsia (no color). The severity slider shows milder forms.
How accurate is it?
It is an approximation based on standard color transformation matrices. It is good for spotting colors that become hard to tell apart, but real vision varies from person to person.
What should I do when two colors look alike?
Do not rely on color alone. Add a label, an icon or a pattern, or change one color so it differs in lightness, which color blindness does not affect.
Is my image uploaded?
No. The image is read and changed in your browser and never sent anywhere.