Nomad

#a19986

A neutral that has no useful hue — it reads as a grey. It is light — black text sits on it comfortably, white text does not.

Hex

#a19986

RGB

161, 153, 134

OKLCh

68.5% 0.029 87.9°

CIELAB (D50)

63.5, 0.6, 11.1

What is true of this colour, and of no other

6 other named colours sit within ΔE00 2 of it.
It uses only 20% 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 54.4; on black, Lc -47.5. 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 11.6 — no blue cone.

Text on this colour

White text

2.83:1 — fails AA

Black text

7.42:1 — passes AA

Black text is the better of the two at7.42:1. That is enough for body text.

As text on white, it needs to change

#7e7664 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

#a19986

protanopia

#9a9a86 · ΔE00 4.3

deuteranopia

#9b9b86 · ΔE00 4.5

tritanopia

#9d9d63 · ΔE00 11.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isNapa at ΔE00 0.655: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

NapaΔE00 0.655 · #a39a87
Calico RockΔE00 1.55 · #9c9584
BarnfloorΔE00 1.614 · #9c9481
Honed SoapstoneΔE00 1.682 · #9d9887
At Ease SoldierΔE00 1.755 · #9e9985
Apple HillΔE00 1.918 · #a69f8d
GreywoodΔE00 2.029 · #9d9586
Voysey GreyΔE00 2.169 · #9a937f
Sacred VortexΔE00 2.181 · #a59c8d
Seneca RockΔE00 2.274 · #9a927f
Stonehenge GreigeΔE00 2.358 · #a79d8d
IronwoodΔE00 2.47 · #a19583

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