Ballet on Heavy Cream

#f7d5d4 on #e8ddc6

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

1.01:1

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 0.0

Below Lc 15: the draft treats this as not text.

Too close to call.

Colour difference

ΔE00 15.0

different colours

Above 10 — related only in the sense that both are colours.

What the text colour has to become

#785b5b is the nearest colour of the same hue that passes AA on #e8ddc6, 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

Body text

Ratio 1.04:1, ΔE00 7.6.

deuteranopia

Body text

Ratio 1.00:1, ΔE00 5.0.

tritanopia

Body text

Ratio 1.01:1, ΔE00 13.3.

The weakest of the three is deuteranopia, where the two are ΔE00 5.0 apart against 15.0 for a trichromat — still two colours, but a closer call than it looks to you.

Both colours have pages of their own: Ballet ·Heavy Cream · the same pair the other way round ·all pairs