APCA Contrast Matrix

Simulated calculation of Lightness Contrast (Lc) vs WCAG 2.

JavaScript Disabled

Fallback Matrix:

Text	BG	WCAG 2.1	APCA (Lc)
#FFFFFF	#000000	21.0:1	106 (Max)
#A1A1AA	#0A0A0C	4.5:1	60 (Pass for large text)

(Tool logic relies on complex APCA polynomial math; simplistic JS implementation omitted here for brevity; refer to WCAG 3 drafts).