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 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
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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.
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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.
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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.
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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.
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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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