Any text with a contrast below 3.0 fails.Īccording to WCAG 2.1 AA Success Criterion 1.4.11:.Large text (18pt or 14pt bold) with a contrast of 3.0 or greater passes.
Any text with a contrast of 4.5 or greater passes. Minimum contrast requirementsĪccording to WCAG 2.0 AA Success Criterion 1.4.3: The problems can be exacerbated if the person has a color vision deficiency that lowers the perceived contrast even further. People with low vision often have difficulty reading text, identifying buttons that do not contrast with their background, or determining the state of UI components. Why contrast ratio mattersĮnsuring adequate contrast makes it easier for everyone to read text content, interpret graphical elements, identify UI components, and notice when those components change state. You can also watch a short video to learn more about the Color Contrast Analyzer. All other color combinations fall somewhere in between. Identical colors have the lowest possible contrast ratio, 1:1. Black and white have the highest possible contrast ratio, 21:1. In general, higher contrast ratios make text and graphics easier to perceive and read. #Color contrast analyser online windows#
The Color Contrast Analyzer is a feature in Accessibility Insights for Windows that helps developers investigate contrast ratios.Ĭontrast ratio describes the relative brightness of foreground and background colors on a computer display. Color Contrast Analyzer in Accessibility Insights for Windows What is the Color Contrast Analyzer?
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