Master Sword Blue on Secret Path
#00ffee on #737054
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
3.96:1
Large text only
Not AAA (7:1). Swapping the two colours gives the same number — the ratio does not know which is the text.
APCA
Lc -63.6
Clears Lc 60 — headlines and other larger text.
Light text on a darker ground — the negative sign is the polarity.
Colour difference
ΔE00 44.3
different colours
Above 10 — related only in the sense that both are colours.
What the text colour has to become
#bcfff6 is the nearest colour of the same hue that passes AA on #737054, at 4.50:1. Only the lightness moved, and some chroma was given up to stay inside sRGB — which is the point: your colour stays recognisably your colour.
And to someone missing a cone
protanopia
Ratio 4.50:1, ΔE00 38.5.
deuteranopia
Ratio 3.68:1, ΔE00 40.3.
tritanopia
Ratio 2.83:1, ΔE00 48.5.
The weakest of the three is protanopia, where the two are ΔE00 38.5 apart against 44.3 for a trichromat — still clearly two colours.
Both colours have pages of their own: Master Sword Blue ·Secret Path · the same pair the other way round ·all pairs