Heavy Cream on Black Sabbath
#e8ddc6 on #220022
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
14.29:1
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 -85.8
Clears Lc 75 — body text at a normal size and weight.
Light text on a darker ground — the negative sign is the polarity.
Colour difference
ΔE00 85.9
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #e8ddc6 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 14.58:1, ΔE00 85.2.
deuteranopia
Ratio 14.14:1, ΔE00 84.8.
tritanopia
Ratio 13.64:1, ΔE00 81.9.
The weakest of the three is tritanopia, where the two are ΔE00 81.9 apart against 85.9 for a trichromat — still clearly two colours.
Both colours have pages of their own: Heavy Cream ·Black Sabbath · the same pair the other way round ·all pairs