Stephen F. Austin State University

Color Blindness

Web accessibility also includes catering to sighted visitors that happen to be color blind. When you design with color blindness in mind, aim to have your website functional without using color for distinction.

Tools and Articles

Color Blindness Simulator - etre Limited

This free simulator will check an image to show you how a colorblind user would see it. You can upload a JPEG image to see how color blind users may see it.

Colour Check - etre Limited

This free online tool determines the color difference and contrast between any two colors and whether or not the two colors have enough contrast and brightness.

Creating Accessible Images - WebAIM

This article shows how to use color, contrast, and other techniques to create an image accessible to people with color blindness.

Colors for the Blind - Toldeo-Bend

This site offers basic color-blindness demonstrations and explanations, but also suggests color palettes that should be viewable by most forms of color blindness.