Columbo’s Coat

#d0cbce

A neutral that has no useful hue — it reads as a grey. It is very light — it works as a page background, not as text.

Hex

#d0cbce

RGB

208, 203, 206

OKLCh

84.7% 0.007 340.4°

CIELAB (D50)

82.2, 2.2, -0.9

What is true of this colour, and of no other

19 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 6% 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 27.1; on black, Lc -75.9. 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 9.7 — no blue cone.

Text on this colour

White text

1.60:1 — fails AA

Black text

13.12:1 — passes AA

Black text is the better of the two at13.12:1. That is enough for body text.

As text on white, it needs to change

#7a7578 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

#d0cbce

protanopia

#ccccce · ΔE00 2.6

deuteranopia

#ccccce · ΔE00 2.8

tritanopia

#cdcdbe · ΔE00 9.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSensitive Tint at ΔE00 0.489: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Sensitive TintΔE00 0.489 · #cec9cc
El NiñoΔE00 0.52 · #d0cacd
Inuit WhiteΔE00 0.656 · #d1cdd0
Light Easter RabbitΔE00 0.912 · #d4ced1
Clay Slate WackeΔE00 1.12 · #cdcace
Mercury GlassΔE00 1.122 · #cec9ca
Light Stately FrillsΔE00 1.146 · #d2ccd1
Watermill WoodΔE00 1.349 · #d3cccd
Light WallisΔE00 1.513 · #d4ccce
Coverts Wood PigeonΔE00 1.518 · #d4cdd2
Chupacabra GreyΔE00 1.666 · #cfcdcf
Dangerous RobotΔE00 1.803 · #cbc5c6

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