WebAIM Says This Gray Passes WCAG; APCA Says It Doesn't. Both Cite W3C.

#767676 text on white returns a WCAG 2 ratio of 4.54:1, which clears AA-Normal by 0.04. The same pair returns APCA Lc +71.6, which fails the 16 px / 400 body-text minimum of 75 from apca-w3's font lookup table. Two W3C-blessed contrast algorithms, same hex codes, opposite verdicts at body-text size — and every mainstream consumer checker implements only one of them.