Iron Maiden

#d6d1dc

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

#d6d1dc

RGB

214, 209, 220

OKLCh

86.8% 0.016 306.4°

CIELAB (D50)

84.5, 3.3, -4.8

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 19% 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 23.4; on black, Lc -79.8. 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.
tritanopia shifts it by ΔE00 9.4 — no blue cone.

Text on this colour

White text

1.50:1 — fails AA

Black text

14.01:1 — passes AA

Black text is the better of the two at14.01:1. That is enough for body text.

As text on white, it needs to change

#79757f 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

#d6d1dc

protanopia

#d2d2dc · ΔE00 2.5

deuteranopia

#d2d2dc · ΔE00 2.6

tritanopia

#d3d3cd · ΔE00 9.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isLovely Lavender at ΔE00 0.515: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Lovely LavenderΔE00 0.515 · #d6d2dd
Sword SteelΔE00 0.662 · #d6d2de
Take the PlungeΔE00 1.185 · #d8d4dd
Lavender HazeΔE00 1.304 · #d3d0dd
Frosted LilacΔE00 1.481 · #d3d1dc
Violet WhimseyΔE00 1.488 · #dad6df
Titan WhiteΔE00 1.568 · #ddd6e1
Spooky GhostΔE00 1.661 · #d4d1d9
Misty VioletΔE00 1.665 · #dbd7e4
Kundalini BlissΔE00 1.735 · #d2ccda
Heavenly HazeΔE00 1.775 · #d8d5e3
Jam SessionΔE00 1.831 · #d4cfd6

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