Flash in the Pan on Neon Boneyard
#ff9977 on #dfc5fe
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
1.35:1
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 12.9
Below Lc 15: the draft treats this as not text.
Dark text on a lighter ground.
Colour difference
ΔE00 33.5
different colours
Above 10 — related only in the sense that both are colours.
What the text colour has to become
#983c1b is the nearest colour of the same hue that passes AA on #dfc5fe, 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 1.53:1, ΔE00 39.7.
deuteranopia
Ratio 1.27:1, ΔE00 42.5.
tritanopia
Ratio 1.04:1, ΔE00 20.7.
The weakest of the three is tritanopia, where the two are ΔE00 20.7 apart against 33.5 for a trichromat — still clearly two colours.
Both colours have pages of their own: Flash in the Pan ·Neon Boneyard · the same pair the other way round ·all pairs