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Color Contrast Checker - Free Online Utility Tool

Free color contrast checker - no sign-up required.

About Color Contrast Checker

Color Contrast Checker is a free, easy-to-use online utility tool from Code63 Apps.Free color contrast checker - no sign-up required. This tool has been used 1 times by people looking for a simple, no-signup solution.

How to Use Color Contrast Checker

  1. Enter your information in the form above
  2. The tool will process your input instantly
  3. View your results immediately - no waiting
  4. Your data stays private - everything runs in your browser

Frequently Asked Questions

What is Color Contrast Checker?

Color Contrast Checker is a free online utility tool. Free color contrast checker - no sign-up required.

Is Color Contrast Checker free to use?

Yes, Color Contrast Checker is completely free to use. No sign-up or registration required.

How do I use Color Contrast Checker?

Simply enter your information in the form above and the tool will calculate or generate results instantly. All processing happens in your browser.

Is my data safe with Color Contrast Checker?

Yes, your data never leaves your browser. Color Contrast Checker processes everything locally - we don't store or transmit your personal information.

Can I use Color Contrast Checker on mobile?

Yes, Color Contrast Checker is fully responsive and works on smartphones, tablets, and desktop computers.

Why Use Color Contrast Checker?

  • 100% Free - No hidden costs or premium features
  • No Sign-up Required - Start using immediately
  • Privacy-First - Your data never leaves your device
  • Fast Results - Instant calculations and outputs
  • Mobile-Friendly - Works on any device

Color Contrast Checker

Free color contrast checker - no sign-up required.

Provide input to use this tool

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Quick Answer

Our free color contrast checker instantly verifies if your text and background colors meet WCAG standards—aiming for a 4.5:1 ratio for normal text and 3:1 for large text—with no sign-up required[1][2][4]. Just input hex, RGB, or HSL values to get pass/fail results, visual previews, and compliance for AA/AAA levels, ensuring accessibility for all users[2][5].

Why You Need This

Insufficient color contrast between text and backgrounds causes readability issues, excluding users with visual impairments like low vision, color blindness (affecting 8% of men and 0.5% of women), or age-related conditions such as cataracts[1][2][6]. With 15% of the global population (over 1 billion people) living with disabilities, poor contrast leads to higher bounce rates, eye strain, and reduced engagement for everyone[1][6]. Compliance boosts retention, task efficiency, and meets regulations like ADA, Section 508, and WCAG 2.1/2.2, benefiting web designers, developers, elderly users, and organizations building inclusive sites[3][4][6].

How It Works

Enter your foreground (text) and background colors using hex (#RRGGBB), RGB, or HSL formats via simple fields or an eyedropper tool for precise luminance calculations[4][5]. The tool computes the contrast ratio in seconds, displays if it passes WCAG AA (4.5:1) or AAA (7:1) levels, and shows previews simulating real-world readability[1][2][4]. Results help adjust designs early, reducing rework and ensuring cross-device compatibility[1][3].

Tips for Best Results

  • Test multiple scenarios like transparency, patterns, and large text; tweak lightness while keeping hues intact[1][5].
  • Sample colors directly from screens, images, or PDFs with the eyedropper for accuracy[5].
  • Aim for high-contrast combos like black on white (21:1 ratio) and retest across browsers/devices[4][7].
  • Document passing palettes in style guides and simulate for color blindness to confirm inclusivity[1][3][4].

Sources