Image Contrast Accessibility Check
Web Content Accessibility Guidelines (WCAG)
- Global Contrast: Measures overall tonal separation (Contrast Value from 0-1).
- RMS Contrast: Root-mean-square pixel variation, indicates overall visual variability.
- Contrast Ratio (WCAG): Brightest vs darkest luminance ratio (Accessibility Standard).
- Overall Score: Composite score (0–100) combining all metrics for accessibility.