HomeColor Contrast Checker

Color Contrast Checker

Online color contrast checker with real-time foreground and background ratio calculation, WCAG AA/AAA validation, and palette suggestions for accessible web design and UI review

Foreground (Text)

Common colors

Background

Common colors

Live Preview

Sample Heading

This sample paragraph helps you review readability for regular text under the current color combination.

Link text preview

21.00:1

Contrast ratio

WCAG AA

WCAG AAA

Color Adjustment Suggestions

Click any suggestion to apply it as foreground color.

Lighter foreground

Darker foreground

Recommended Color Pairs

Related Tools

CSS Design Spec Checker
Image Compare
Image Palette Extractor
Color Naming
Color Blindness Simulator
Random Color Generator
Color Picker/Converter
Color Palette Generator

Documentation

Overview

Color Contrast Checker evaluates readability between foreground and background colors against WCAG accessibility criteria.

Core Features

  • Real-time contrast ratio calculation.
  • WCAG AA/AAA pass status.
  • Lighter/darker suggestion colors.
  • Quick preset color combinations.

How To Use

  1. Set foreground and background colors.
  2. Check contrast ratio and rating.
  3. Tune colors using suggestions.

Privacy

All calculations are local in-browser. No color data is uploaded.

Data is processed locally in your browser by default and will not be uploaded to any server. Upload will be clearly indicated if required.

© 2026 See-Tool. All rights reserved. | Contact Us