Ballet on Olympian Blue
#f7d5d4 on #1c4c8c
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
6.26:1
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 -71.5
Clears Lc 60 — headlines and other larger text.
Light text on a darker ground — the negative sign is the polarity.
Colour difference
ΔE00 57.2
different colours
Above 10 — related only in the sense that both are colours.
Nothing to fix
This pair already clears 4.5:1, so #f7d5d4 can stay exactly as it is. Check another pair.
And to someone missing a cone
protanopia
Ratio 5.73:1, ΔE00 53.3.
deuteranopia
Ratio 6.57:1, ΔE00 59.4.
tritanopia
Ratio 6.49:1, ΔE00 88.1.
The weakest of the three is protanopia, where the two are ΔE00 53.3 apart against 57.2 for a trichromat — still clearly two colours.
Both colours have pages of their own: Ballet ·Olympian Blue · the same pair the other way round ·all pairs