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Toolify

Color Contrast Checker

Professional grade color contrast checker. Secure, fast, and runs entirely in your browser.

21.00
Contrast Ratio
Normal Text
AAA
Large Text
AAA

Preview Heading

This is how your normal text will look like on the background. Check if it is readable enough for users.

WCAG AA: Requires a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text.

WCAG AAA: Requires a contrast ratio of at least 7:1 for normal text and 4.5:1 for large text.

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About This Tool

The Color Contrast Checker is a powerful utility designed for developers, SEO professionals, and content creators. Unlike other tools that send your data to a server, this tool processes everything locally in your browser, ensuring maximum privacy and speed.

Key Features

  • 100% Free: No signup, no limits, no hidden costs.
  • Privacy Focused: No data leaves your device. All processing is client-side.
  • Instant Results: No loading times or server delays.
  • Professional Quality: Built for real-world production use.

How to Use

  1. Enter or paste your content into the input field above.
  2. Adjust any settings or configuration options if available.
  3. Click the primary action button to process your data.
  4. Copy the results to your clipboard or use them directly.