Wild Thing on Sprinkled With Pink
#654243 on #e7a2ae
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
4.22:1
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 47.5
Clears Lc 45 — large or heavy display text.
Dark text on a lighter ground.
Colour difference
ΔE00 41.2
different colours
Above 10 — related only in the sense that both are colours.
What the text colour has to become
#613e3f is the nearest colour of the same hue that passes AA on #e7a2ae, at 4.50:1. Only the lightness moved — which is the point: your colour stays recognisably your colour.
And to someone missing a cone
protanopia
Ratio 4.10:1, ΔE00 40.4.
deuteranopia
Ratio 4.27:1, ΔE00 40.5.
tritanopia
Ratio 4.33:1, ΔE00 41.0.
The weakest of the three is protanopia, where the two are ΔE00 40.4 apart against 41.2 for a trichromat — still clearly two colours.
Both colours have pages of their own: Wild Thing ·Sprinkled With Pink · the same pair the other way round ·all pairs