Corrosive Green on Clairvoyant
#54d905 on #480656
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
7.87:1
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 -63.6
Clears Lc 60 — headlines and other larger text.
Light text on a darker ground — the negative sign is the polarity.
Colour difference
ΔE00 98.7
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #54d905 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 9.70:1, ΔE00 90.9.
deuteranopia
Ratio 7.03:1, ΔE00 77.3.
tritanopia
Ratio 6.07:1, ΔE00 67.5.
The weakest of the three is tritanopia, where the two are ΔE00 67.5 apart against 98.7 for a trichromat — still clearly two colours.
Both colours have pages of their own: Corrosive Green ·Clairvoyant · the same pair the other way round ·all pairs