Flash in the Pan on Ethereal Espresso
#ff9977 on #3e2723
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
6.63:1
Passes AA for body text
Not AAA (7:1). Swapping the two colours gives the same number — the ratio does not know which is the text.
APCA
Lc -57.4
Clears Lc 45 — large or heavy display text.
Light text on a darker ground — the negative sign is the polarity.
Colour difference
ΔE00 55.5
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #ff9977 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 5.90:1, ΔE00 48.4.
deuteranopia
Ratio 7.00:1, ΔE00 57.7.
tritanopia
Ratio 8.06:1, ΔE00 63.1.
The weakest of the three is protanopia, where the two are ΔE00 48.4 apart against 55.5 for a trichromat — still clearly two colours.
Both colours have pages of their own: Flash in the Pan ·Ethereal Espresso · the same pair the other way round ·all pairs