Master Sword Blue on Kelp
#00ffee on #4d503c
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
6.54:1
Passes AA for body text
Not AAA (7:1). Swapping the two colours gives the same number — the ratio does not know which is the text.
APCA
Lc -76.7
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 55.2
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 7.36:1, ΔE00 51.9.
deuteranopia
Ratio 6.10:1, ΔE00 51.8.
tritanopia
Ratio 4.69:1, ΔE00 49.4.
The weakest of the three is tritanopia, where the two are ΔE00 49.4 apart against 55.2 for a trichromat — still clearly two colours.
Both colours have pages of their own: Master Sword Blue ·Kelp · the same pair the other way round ·all pairs