Frozen Forest on Super Pink
#cfe8b6 on #ce6ba6
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
2.53:1
Fails AA
Not AAA (7:1). Swapping the two colours gives the same number — the ratio does not know which is the text.
APCA
Lc -45.8
Clears Lc 45 — large or heavy display text.
Light text on a darker ground — the negative sign is the polarity.
Colour difference
ΔE00 55.1
different colours
Above 10 — related only in the sense that both are colours.
What the text colour has to become
#1a2b00 is the nearest colour of the same hue that passes AA on #ce6ba6, 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 3.09:1, ΔE00 45.6.
deuteranopia
Ratio 2.30:1, ΔE00 32.8.
tritanopia
Ratio 1.96:1, ΔE00 47.2.
The weakest of the three is deuteranopia, where the two are ΔE00 32.8 apart against 55.1 for a trichromat — still clearly two colours.
Both colours have pages of their own: Frozen Forest ·Super Pink · the same pair the other way round ·all pairs