Flash in the Pan on Panorama
#ff9977 on #327a88
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
2.36:1
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 -33.2
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 48.4
different colours
Above 10 — related only in the sense that both are colours.
What the text colour has to become
#fff2ee is the nearest colour of the same hue that passes AA on #327a88, at 4.50:1. Only the lightness moved, and some chroma was given up to stay inside sRGB — which is the point: your colour stays recognisably your colour.
And to someone missing a cone
protanopia
Ratio 1.86:1, ΔE00 33.0.
deuteranopia
Ratio 2.66:1, ΔE00 45.7.
tritanopia
Ratio 3.14:1, ΔE00 76.7.
The weakest of the three is protanopia, where the two are ΔE00 33.0 apart against 48.4 for a trichromat — still clearly two colours.
Both colours have pages of their own: Flash in the Pan ·Panorama · the same pair the other way round ·all pairs