Wild Thing on Cyantific
#654243 on #77c9c2
Body text at this size
And the smaller size most interfaces actually use for paragraphs — the size that decides whether a pair is usable.
Caption text, which almost nothing passes.
WCAG 2.1
4.52:1
Passes AA for body text
Not AAA (7:1). Swapping the two colours gives the same number — the ratio does not know which is the text.
APCA
Lc 50.9
Clears Lc 45 — large or heavy display text.
Dark text on a lighter ground.
Colour difference
ΔE00 58.1
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #654243 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 5.24:1, ΔE00 46.4.
deuteranopia
Ratio 4.18:1, ΔE00 42.3.
tritanopia
Ratio 3.56:1, ΔE00 62.7.
The weakest of the three is deuteranopia, where the two are ΔE00 42.3 apart against 58.1 for a trichromat — still clearly two colours.
Both colours have pages of their own: Wild Thing ·Cyantific · the same pair the other way round ·all pairs