Diamonds in the Sky

#e5e2e1

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

#e5e2e1

RGB

229, 226, 225

OKLCh

91.5% 0.004 39.5°

CIELAB (D50)

90.1, 0.9, 0.9

What is true of this colour, and of no other

70 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 14.3; on black, Lc -89.5. 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 5.6 — no blue cone.

Text on this colour

White text

1.29:1 — fails AA

Black text

16.30:1 — passes AA

Black text is the better of the two at16.30:1. That is enough for body text.

As text on white, it needs to change

#797675 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

#e5e2e1

protanopia

#e2e2e1 · ΔE00 1.6

deuteranopia

#e3e3e1 · ΔE00 1.7

tritanopia

#e3e3d8 · ΔE00 5.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isGrey Whisper at ΔE00 0.782: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Grey WhisperΔE00 0.782 · #e6e4e4
Mystical MistΔE00 1.028 · #e5e2e3
Spilled CappuccinoΔE00 1.055 · #e4e1de
Dusky DawnΔE00 1.07 · #e5e1de
Timid SheepΔE00 1.134 · #e4e0dd
Deep Daigi WhiteΔE00 1.165 · #e9e7e6
Cold MorningΔE00 1.182 · #e6e5e4
Royal SilverΔE00 1.217 · #e0dddd
Early CrocusΔE00 1.22 · #eae7e7
Antique PetalΔE00 1.227 · #e8e3e3
Fall ChillΔE00 1.264 · #e1dddb
Christmas SilverΔE00 1.284 · #e1dfe0

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