Dragon’s Fire on Memorial Black
#fc4a14 on #091101
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
5.61:1
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 -41.0
Clears Lc 30 — the floor: below this the draft considers text not readable at any size.
Light text on a darker ground — the negative sign is the polarity.
Colour difference
ΔE00 55.6
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #fc4a14 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 3.80:1, ΔE00 36.2.
deuteranopia
Ratio 6.60:1, ΔE00 52.7.
tritanopia
Ratio 9.68:1, ΔE00 71.6.
The weakest of the three is protanopia, where the two are ΔE00 36.2 apart against 55.6 for a trichromat — still clearly two colours.
Both colours have pages of their own: Dragon’s Fire ·Memorial Black · the same pair the other way round ·all pairs