Irish Moor

#b5c0b3

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

#b5c0b3

RGB

181, 192, 179

OKLCh

79.5% 0.022 140.9°

CIELAB (D50)

76.6, -5.7, 5.2

What is true of this colour, and of no other

16 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 8% 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 35.7; on black, Lc -66.8. 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.
protanopia and deuteranopia and tritanopia shift it by ΔE00 5.2 and 5.4 and 17.5 — no red cone.

Text on this colour

White text

1.88:1 — fails AA

Black text

11.16:1 — passes AA

Black text is the better of the two at11.16:1. That is enough for body text.

As text on white, it needs to change

#6f7a6e 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

#b5c0b3

protanopia

#bfbfb3 · ΔE00 5.2

deuteranopia

#bdbdb3 · ΔE00 5.4

tritanopia

#bbbbd2 · ΔE00 17.5

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRecycled Glass at ΔE00 0.948: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Recycled GlassΔE00 0.948 · #b7c3b7
Flagstaff GreenΔE00 0.957 · #b3bfb0
Median GreenΔE00 1.161 · #b8c4b8
OpalescenceΔE00 1.324 · #b4c0b6
MossaΔE00 1.352 · #b4c2b6
Belize GreenΔE00 1.486 · #b9c3b3
Kimberley TreeΔE00 1.511 · #b8c1b1
KahiliΔE00 1.536 · #b7bfb0
Coastal CrushΔE00 1.607 · #b4c0af
RaineeΔE00 1.655 · #b3c1b1
Hazel GazeΔE00 1.789 · #b8bfb1
Bog FogΔE00 1.79 · #bac3b9

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