Memorial Black on Master Sword Blue
#091101 on #00ffee
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
15.14:1
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 90.4
Clears Lc 90 — the level the draft treats as a maximum worth targeting for body text.
Dark text on a lighter ground.
Colour difference
ΔE00 87.5
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #091101 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 17.02:1, ΔE00 91.0.
deuteranopia
Ratio 14.13:1, ΔE00 82.0.
tritanopia
Ratio 10.86:1, ΔE00 68.0.
The weakest of the three is tritanopia, where the two are ΔE00 68.0 apart against 87.5 for a trichromat — still clearly two colours.
Both colours have pages of their own: Memorial Black ·Master Sword Blue · the same pair the other way round ·all pairs