WCAG Color Contrast Checker

Get a full WCAG contrast analysis for text, links, and images.

Image contrast checker

Use our Image Contrast Checker to upload an image, drag text around, and adjust color and size to test WCAG AA/AAA contrast.

Format: jpeg, png & Max file size: 25 MB

WCAG
AA: Pass AAA: Fail
Contrast Ratio
8.42 Very good
Your text
Small text

WCAG Image Contrast Compliance

Ensuring image contrast is crucial for readability and accessibility. An image contrast checker helps evaluate factors like text-over-image contrast, overlays, and readability across varied backgrounds.

Free Web Accessibility Checker

Check more than just contrast-scan your site for WCAG compliance issues instantly.


Common Image Contrast Mistakes Designers Make

  • Placing text over images without enough contrast can make it unreadable. Ensure a 4.5:1 contrast ratio for small text and 3:1 for large text by using overlays, shadows, or contrasting colors.

  • While overlays can improve contrast, excessive transparency can make text blend into the background. Use solid or semi-transparent overlays with sufficient opacity to maintain readability.

  • Icons or labels placed directly on images without sufficient contrast can be hard to identify. Always ensure a minimum 3:1 contrast ratio between key elements and their background.

  • Using color alone to differentiate text or elements can create accessibility barriers for colorblind users. Always pair colors with patterns, labels, or icons to ensure clear distinction.

  • Contrast that looks good on one screen may fail in different lighting conditions. Test images in both bright and dim environments to ensure readability across all viewing scenarios.

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