Vintage Bloom on Black Box
#c0b0d0 on #0f282f
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
7.59:1
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 -60.0
Clears Lc 45 — large or heavy display text.
Light text on a darker ground — the negative sign is the polarity.
Colour difference
ΔE00 59.6
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #c0b0d0 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 7.26:1, ΔE00 54.7.
deuteranopia
Ratio 7.78:1, ΔE00 56.5.
tritanopia
Ratio 7.68:1, ΔE00 65.6.
The weakest of the three is protanopia, where the two are ΔE00 54.7 apart against 59.6 for a trichromat — still clearly two colours.
Both colours have pages of their own: Vintage Bloom ·Black Box · the same pair the other way round ·all pairs