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Accessibility Contrast: Red and White

Analyzing Red (#DC2626) foreground text over White (#FFFFFF) background.

Contrast Ratio
4.83:1
WCAG AA Pass

WCAG 2.1 Compliance Ratings

AA Normal Text (4.5:1) ✓ PASS
AA Large Text (3.0:1) ✓ PASS
AAA Normal Text (7.0:1) ✗ FAIL
AAA Large Text (4.5:1) ✓ PASS

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Red and White Accessibility Mockup

A standard alarm and branding color combo. Red text on white requires careful selection to meet the 4.5:1 ratio. This paragraph displays how the foreground color reads at a body font size. Under WCAG definitions, normal text requires a higher contrast ratio than larger display headers.

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Contrast FAQs & Regulatory Info

Does the Red and White combination comply with ADA standards?

Under current ADA Title III guidelines, digital services are audited against WCAG 2.1 level AA. This pairing scores a contrast ratio of 4.83:1. This means it meets the 4.5:1 minimum threshold for body text, and meets the 3.0:1 threshold for large text elements.


What defines large text vs normal text in contrast requirements?

Large text is defined by the W3C as text that is at least 18 point (typically 24px) or 14 point bold (typically 18.67px bold). Normal text is any text below these sizes, requiring a higher minimum contrast ratio of 4.5:1 because smaller font sizes are significantly harder to read at lower contrast.