Imperial Ivory

#f1e8d2

A yellow that is nearly neutral — the hue shows only against a true grey. It is very light — it works as a page background, not as text.

Hex

#f1e8d2

RGB

241, 232, 210

OKLCh

93.2% 0.031 88.4°

CIELAB (D50)

92.3, 0.5, 11.9

What is true of this colour, and of no other

158 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
It uses only 38% of the chroma available at this lightness and hue — there is a far more vivid version of this colour inside sRGB.
As text on white it measures APCA Lc 10.8; on black, Lc -93.2. The sign is the polarity, which the WCAG ratio discards.
Built into an eleven-step scale, 10 of the 10 adjacent pairs stay ΔE00 2 apart — see the ramp.
tritanopia shifts it by ΔE00 11.2 — no blue cone.

Text on this colour

White text

1.22:1 — fails AA

Black text

17.21:1 — passes AA

Black text is the better of the two at17.21:1. That is enough for body text.

As text on white, it needs to change

#7e7662 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#f1e8d2

protanopia

#e9e9d2 · ΔE00 4.4

deuteranopia

#ebebd2 · ΔE00 4.6

tritanopia

#ececae · ΔE00 11.2

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isWhite Fence at ΔE00 0.215: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

White FenceΔE00 0.215 · #f2e9d3
Informal IvoryΔE00 0.54 · #f1e7d0
White Warm WoolΔE00 0.549 · #efe6d1
Bleached AlmondΔE00 0.576 · #f3ead5
Yucca WhiteΔE00 0.654 · #f2ead5
Country DairyΔE00 0.691 · #f1e9d2
Vintage LaceΔE00 0.705 · #f1e7d2
Minified YellowΔE00 0.716 · #f4ebd4
Pearled CouscousΔE00 0.773 · #f2e9d5
Vanilla WaferΔE00 0.805 · #f3ead2
Good Morning AkihabaraΔE00 0.845 · #f4ead5
Atlas WhiteΔE00 0.847 · #ede5cf

11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.