APCA Perceptual Contrast

WCAG 3.0 Silver (Draft) Standard - Citation and Reference

APCA (Lc) measures how the human eye perceives contrast. Unlike WCAG 2.1, it accounts for text size, font weight, and whether you are using Dark or Light mode.

Text Color

Background Color

Web Content Accessibility Guidelines (WCAG)

APCA Score (Lc)	-
Polarity	-
Criteria Pass/Fail (Lc "Light Contrast" Score): • Small Body Text @14px/16px - (Lc Score Requirement: 75) • Large Text @24px+ - (Lc Score Requirement: 60) • UI Icons / Graphics - (Lc Score Requirement: 45)