More information can be found here https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html .
Rating | Success Criterion | Notes |
|---|---|---|
AAA | Pass, (7+ contrast ratio) | |
AA | Pass, (4.5+ contrast ratio) | |
AALG | Pass, Large Text Only, (3+ contrast ratio) | with at least 18 point or 14 point bold or font size |