Black Sabbath on Flash in the Pan
#220022 on #ff9977
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
9.23:1
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 62.5
Clears Lc 60 — headlines and other larger text.
Dark text on a lighter ground.
Colour difference
ΔE00 66.3
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 8.14:1, ΔE00 63.5.
deuteranopia
Ratio 9.79:1, ΔE00 71.7.
tritanopia
Ratio 11.47:1, ΔE00 75.3.
The weakest of the three is protanopia, where the two are ΔE00 63.5 apart against 66.3 for a trichromat — still clearly two colours.
Both colours have pages of their own: Black Sabbath ·Flash in the Pan · the same pair the other way round ·all pairs