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✦ New Tool

Contrast Checker Pro

Check color contrast ratios for WCAG AA/AAA compliance. Enter foreground and background hex colors to verify accessibility.

Tool
Why Use This Tool

Benefits of Using Color Contrast Checker

✅

WCAG Compliance

Instantly check if your colors pass WCAG AA (4.5:1) and AAA (7:1) accessibility standards.

🎨

Live Preview

See exactly how the foreground text will look against the background color in real-time.

🔍

Detailed Checks

Get separate compliance results for both normal text and large text (headings).

🔒

100% Client-Side

No server tracking. All contrast calculations run locally in your browser.

Quick Start

How to Use This Tool

1

Enter Foreground

Type or paste the hex color code (e.g., #FFFFFF) for your text.

2

Enter Background

Type or paste the hex color code for your background.

3

Check Contrast

Click Check Contrast to instantly calculate the contrast ratio between the two colors.

4

Review Results

Check the breakdown to see if your color pair passes WCAG AA and AAA standards.

Applications

Common Use Cases

🖌️

Web Design

Ensure your website color palette meets legal accessibility requirements before development begins.

📱

App UI

Check the contrast of buttons, badges, and alerts to guarantee readability on mobile devices.

📈

Accessibility Audits

Use the tool during QA testing to quickly verify compliance and identify contrast issues.

Related Guides

Comparisons

M Muhammad Numan Usmani

Muhammad Numan Usmani

Founder & Developer at NumanX Studio

About GitHub X

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Frequently Asked Questions

WCAG (Web Content Accessibility Guidelines) defines contrast ratios to ensure text is readable. The ratio is calculated as (L1 + 0.05) / (L2 + 0.05) where L1 is the relative luminance of the lighter color and L2 of the darker color. AA requires 4.5:1 for normal text, AAA requires 7:1.
AA is the minimum recommended contrast level (4.5:1 for normal text, 3:1 for large text). AAA is an enhanced standard (7:1 for normal text, 4.5:1 for large text). AA is typically required for legal compliance, while AAA is a best-practice target.
To improve contrast, darken the foreground text or lighten the background (or vice versa). Small adjustments to hex values can significantly impact the contrast ratio. Tools like this checker help you verify compliance before deploying your design.