Chocolate Castle on Corrosive Green
#452207 on #54d905
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
7.61:1
Passes AA for body text
AAA too. Swapping the two colours gives the same number — the ratio does not know which is the text.
APCA
Lc 63.9
Clears Lc 60 — headlines and other larger text.
Dark text on a lighter ground.
Colour difference
ΔE00 72.0
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #452207 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 9.07:1, ΔE00 67.9.
deuteranopia
Ratio 6.91:1, ΔE00 56.9.
tritanopia
Ratio 5.77:1, ΔE00 67.4.
The weakest of the three is deuteranopia, where the two are ΔE00 56.9 apart against 72.0 for a trichromat — still clearly two colours.
Both colours have pages of their own: Chocolate Castle ·Corrosive Green · the same pair the other way round ·all pairs