Which standard does the Color Contrast Checker use?

It calculates the WCAG contrast ratio and reports AA and AAA pass status.

What color format is supported?

Options use 6-digit HEX colors such as #111111 and #ffffff.

EffiRoom

Color Contrast Checker

Calculate WCAG contrast ratio between foreground and background colors

Runs locally in your browser; input is never uploaded

Image & Design

ForegroundBackground

Usage

Select foreground and background colors. The tool calculates the WCAG contrast ratio and determines whether it meets AA (4.5:1) or AAA (7:1) standards. Ideal for web accessibility color validation.

FAQ

1.
Which standard does the Color Contrast Checker use?
It calculates the WCAG contrast ratio and reports AA and AAA pass status.
2.
What color format is supported?
Options use 6-digit HEX colors such as #111111 and #ffffff.