APCA (Accessible Perceptual Contrast Algorithm) is a new method for predicting contrast for use in emerging web standards (WCAG 3) for determining readability contrast. APCA is derived form the SAPC (S-LUV Advanced Predictive Color) which is an accessibility-oriented color appearance model designed for self-illuminated displays.
css color web accessibility srgb contrast vision wcag readability colorimetry color-contrast luminance color-theory color-contrast-checker wcag-contrast color-models cieluv contrast-calculator apca
- Updated
Apr 17, 2025 - CSS