Ghost Writer on Frozen Forest
#bcb7ad on #cfe8b6
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
1.51:1
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 20.3
Clears Lc 15 — disabled or purely decorative text, which is not meant to be read.
Dark text on a lighter ground.
Colour difference
ΔE00 19.1
different colours
Above 10 — related only in the sense that both are colours.
What the text colour has to become
#68635a is the nearest colour of the same hue that passes AA on #cfe8b6, 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 1.56:1, ΔE00 15.5.
deuteranopia
Ratio 1.48:1, ΔE00 13.5.
tritanopia
Ratio 1.49:1, ΔE00 29.3.
The weakest of the three is deuteranopia, where the two are ΔE00 13.5 apart against 19.1 for a trichromat — still clearly two colours.
Both colours have pages of their own: Ghost Writer ·Frozen Forest · the same pair the other way round ·all pairs