This week’s featured video in our Web Accessibility 101 Series – Effective Color Contrast – comes to us from Senior Accessibility Consultant Thomas Logan. Thomas explains and demonstrates the importance proper color contrast when designing a web site or application.
For each color selected when designing a site or application there are over 16.5 million options for possible color combinations. Insufficient color contrast prevents users with color deficiencies or low vision from reading and distinguishing content. WCAG 2.0 level AA and proposed Section 508 Refresh require a contrast ratio of 4.5:1 or greater for text of less than 18 point, and 3:1 for text of 18 point (or 14 point bolded) or greater. There are a number of free tools available to analyze color contrast ratio, including SSB’s Contrast Checker.
Be sure to check out SSB’s YouTube Channel for more videos in this series!