Design & Accessibility

What is WCAG (Web Accessibility)?

WCAG are the international web accessibility guidelines, including the AA and AAA color contrast levels.

WCAG (Web Content Accessibility Guidelines) define criteria so that sites are usable by people with disabilities. Among them is the minimum contrast ratio between text and background.

Level AA requires a contrast of at least 4.5:1 for normal text; AAA, stricter, requires 7:1. Ensuring good contrast improves readability for everyone and is an indirect quality signal.

Formula

Contraste AA: ≥ 4,5:1 (texto normal) · AAA: ≥ 7:1

Use it in practice

Contrast Checker

Related terms

Glassmorphism
Mesh Gradient

Frequently asked questions

What minimum contrast does WCAG require?

At level AA, 4.5:1 for normal text and 3:1 for large text; at AAA, 7:1.

Does accessibility influence SEO?

Indirectly yes: it improves user experience, a signal valued by search engines.