WCAG Color Contrast Checker
Validate relative luminance interpolating robust WCAG contrast standards visually checking textual accessibility accurately locally.
WCAG Color Contrast Checker
Verify visual accessibility mathematically determining relative luminance mapping identical WCAG strictly natively gracefully cleanly accurately reliably implicitly precisely natively successfully flawlessly robustly cleanly effectively.
Calculated Contrast Ratio1.00:1
AA Normal TextRatio ≥ 4.5:1
AA Large TextRatio ≥ 3.0:1
AAA Normal TextRatio ≥ 7.0:1
AAA Large TextRatio ≥ 4.5:1
Visual Accessibility Preview Container
This section demonstrates precisely how the selected foreground text string appears natively layered across the active background paint rendering the explicit offline relative luminance exactly actively clearly gracefully. Normal body text (1rem) requires significantly higher ratio bounds (4.5:1 / 7.0:1) compared to larger graphical headers.