Color contrast
Contrast is the difference in brightness between text and its background.
Definition
Contrast is the difference in brightness between text and its background. WCAG AA asks for at least 4.5 to 1 for body text and 3 to 1 for large text.
Use case
Light grey on white placeholder text often fails. Check pairs while choosing palette tints.
Related terms
Tools
WebAIM Contrast Checker
Paste two colors and see the ratio and the pass or fail result right away.