Master Sword Blue on Ethereal Espresso
#00ffee on #3e2723
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
10.89:1
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 -86.8
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 79.4
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #00ffee can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 12.82:1, ΔE00 72.9.
deuteranopia
Ratio 9.92:1, ΔE00 69.0.
tritanopia
Ratio 7.26:1, ΔE00 71.3.
The weakest of the three is deuteranopia, where the two are ΔE00 69.0 apart against 79.4 for a trichromat — still clearly two colours.
Both colours have pages of their own: Master Sword Blue ·Ethereal Espresso · the same pair the other way round ·all pairs