Cómo usarla
Enter foreground and background HEX values, Check contrast, and read the ratio plus AA/AAA results for normal and large text.
Ejemplo
Large text means 18 pt regular or 14 pt bold under WCAG. This page reports the ratio and pass/fail flags only.
Entrada
#000000 on #ffffffSalida
Ratio 21:1, passes AA and AAA for normal and large textCómo funciona
Relative luminance follows WCAG 2.1 sRGB. The contrast ratio is (L1 + 0.05) / (L2 + 0.05) with the lighter luminance on top. Thresholds are 4.5 and 3 for AA, 7 and 4.5 for AAA.
Errores habituales
- An invalid HEX was refused Use three- or six-digit hex with an optional leading #.
- You expected APCA scores This tool implements WCAG 2.1 contrast only.
- UI component contrast was needed Non-text UI uses a 3:1 rule; treat AA large as a guide and read WCAG for components.
Limitaciones
This does not simulate color blindness or measure contrast on images. Alpha and CSS color() spaces are not parsed.
Privacidad
The text you paste is processed in your browser. PepsTools does not receive it, store it, or send it to another service.
Preguntas
What is a passing AA normal score?
A contrast ratio of at least 4.5:1 for normal text.