Research Guides: Web Accessibility : Color Contrast

Color Contrast Checkers

Colour Contrast Analyser (CCA)
TPGi’s (The Paciello Group interactive) free color contrast checker tool allows you to quickly determine the contrast ratio of two colors simply using an eye tool drop.
WebAIM Color Contrast Checker
A free contrast checker tool used to evaluate the foreground and background colors of text and links for WCAG compliance.

Creating Accessible Content: Color and Design - recorded training session on color contrast and how to use free tools for color testing