Black Sabbath on Hint of Blue
#220022 on #cee1f2
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
14.37:1
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 85.9
Clears Lc 75 — body text at a normal size and weight.
Dark text on a lighter ground.
Colour difference
ΔE00 84.6
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #220022 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 15.12:1, ΔE00 83.4.
deuteranopia
Ratio 13.99:1, ΔE00 80.7.
tritanopia
Ratio 13.24:1, ΔE00 82.5.
The weakest of the three is deuteranopia, where the two are ΔE00 80.7 apart against 84.6 for a trichromat — still clearly two colours.
Both colours have pages of their own: Black Sabbath ·Hint of Blue · the same pair the other way round ·all pairs