What is the minimum contrast ratio for WCAG AA compliance?

For WCAG AA compliance, normal text requires a minimum contrast ratio of 4.5:1, while large text (18pt or 14pt bold) requires 3:1.

What is the difference between WCAG AA and AAA standards?

WCAG AAA requires higher contrast ratios: 7:1 for normal text and 4.5:1 for large text, compared to AA's 4.5:1 and 3:1 respectively.

How do I fix poor color contrast?

Use our automatic fix feature to adjust either text or background colors while maintaining your design intent, or manually adjust colors using HSL sliders with visual indicators showing optimal zones for AA/AAA compliance.

What are the visual indicators on the adjustment sliders?

The green zones and AA/AAA markers show optimal ranges for achieving WCAG compliance. The direction hints (Lighter/Darker) guide you toward better contrast based on your current color combination.

Can I test custom color combinations?

Yes, you can enter any hex color codes or use the color picker to select custom colors. The URL updates automatically so you can share specific color combinations.

Color Contrast Checker - WCAG AA & AAA Compliance Tool

1.00:1

Kontrast

Fail

Veoma jadno

Normalni tekst

AA (4.5:1)

✖

AAA (7:1)

✖

Veliki tekst

AA (3:1)

✖

AAA (4.5:1)

✖

Boja teksta

Black

#000000

Boja pozadine

Black

#0088cc

Brza rješenja

Pregled naslova

Brza smeđa lisica preskače lijenog psa

Primjer malog teksta (12px)

Tekst

#000000

Pozadina

#0088cc

WCAG standardi

Level AA

Minimalni omjer kontrasta od 4,5:1 za normalan tekst i 3:1 za veliki tekst. Potreban za većinu web stranica.

Level AAA

Poboljšani omjer kontrasta od 7:1 za normalan tekst i 4,5:1 za veliki tekst. Preporučuje se za optimalnu pristupačnost.

Loš kontrast za sve veličine teksta.