My understanding is this: - APCA does define a “maximum contrast” (currently set at Lc −90 for dark-mode text) to prevent extremes that actually hurt readabili

My understanding is this: - APCA does define a “maximum contrast” (currently set at Lc −90 for dark-mode text) to prevent extremes that actually hurt readability. - But that limit exists purely to guard accessibility - i.e. ensure text remains legible - not to model all factors of visual comfort. APCA’s core goal is “readability contrast” not halation, ambient-light mismatch, or eye-fatigue. So yes: what’s accessible (legible) often overlaps what’s comfortable, but it doesn’t guarantee it. The "Color Comfort Score" aims to pick up where APCA leaves off, by folding in those extra perceptual and environmental factors.