What number do you see?
📷 Click or drop an image to simulate
Curated palettes that remain distinguishable for all major types of color blindness.
ColorBlind is a color vision testing and simulation tool that helps you check for color vision deficiencies. It simulates how images appear to people with different types of color blindness.
Take the color vision test by identifying numbers or patterns in colored circles (Ishihara-style). You can also upload images to see simulations of various color blindness types.
About 8% of men and 0.5% of women have some form of color blindness. This tool helps you understand your own vision and design with accessibility in mind for color-blind users.
Yes! ColorBlind is completely free with no signup required. Your data stays in your browser.