Fuzzy Sheep

#f0e9d1

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

#f0e9d1

RGB

240, 233, 209

OKLCh

93.3% 0.033 93.5°

CIELAB (D50)

92.4, -0.5, 12.6

What is true of this colour, and of no other

83 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 33% 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 10.6; on black, Lc -93.5. 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 8.8 — no blue cone.

Text on this colour

White text

1.22:1 — fails AA

Black text

17.28:1 — passes AA

Black text is the better of the two at17.28:1. That is enough for body text.

As text on white, it needs to change

#7d7761 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

#f0e9d1

protanopia

#eaead1 · ΔE00 3.4

deuteranopia

#ebebd1 · ΔE00 3.5

tritanopia

#ececb6 · ΔE00 8.8

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCandlewick at ΔE00 0.428: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

CandlewickΔE00 0.428 · #f2ebd3
Golden FogΔE00 0.509 · #f0ead2
Natural WhisperΔE00 0.547 · #f0e8cf
Country DairyΔE00 0.663 · #f1e9d2
Crescent MoonΔE00 0.722 · #f1e9cf
Allison LaceΔE00 0.738 · #f1ead4
ChanoyuΔE00 0.777 · #eee8d2
Abbey WhiteΔE00 0.992 · #ece6d0
Vanilla WaferΔE00 1.004 · #f3ead2
Candle WaxΔE00 1.017 · #f2eacf
Light Shell HavenΔE00 1.03 · #f1e8ce
Apple SauceΔE00 1.05 · #f4ebd2

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