Level AASince WCAG 2.1
1.4.11 Non-text Contrast
Guideline 1.4: Distinguishable – Content is easy to see and hear: contrast, size, spacing.
What does the rule require?
Controls and important graphics need contrast too: at least 3:1 for input borders, icons, focus rings and chart lines.
How to get it right
Give inputs a clearly visible border (for example #6b6b85 on white) instead of a barely visible light grey.
Who benefits most?
- People with low vision
Official wording
This page explains the rule in simple words. Only the original W3C text is normative.
- “Understanding Non-text Contrast” at W3C (external site)
- Techniques in the WCAG Quick Reference (external site)