Polar Opposite

#c2d6ec

A blue that is nearly neutral — the hue shows only against a true grey. It is very light — it works as a page background, not as text.

Hex

#c2d6ec

RGB

194, 214, 236

OKLCh

86.8% 0.037 250.8°

CIELAB (D50)

84.6, -3.6, -13.2

What is true of this colour, and of no other

21 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 56% of the chroma sRGB can show at this lightness and hue.
As text on white it measures APCA Lc 22.9; on black, Lc -80.3. 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 9.0 and 9.4 and 10.7 — no red cone.

Text on this colour

White text

1.49:1 — fails AA

Black text

14.12:1 — passes AA

Black text is the better of the two at14.12:1. That is enough for body text.

As text on white, it needs to change

#66798c 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

#c2d6ec

protanopia

#d4d4ec · ΔE00 9.0

deuteranopia

#d0d0ec · ΔE00 9.4

tritanopia

#ccccff · ΔE00 10.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isLight Powder Blue at ΔE00 0.743: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Light Powder BlueΔE00 0.743 · #c4d9ef
Light Water WashΔE00 0.775 · #bfd5eb
Fluid BlueΔE00 1.021 · #c5d6eb
Lull WindΔE00 1.09 · #c3d5e8
SlipstreamΔE00 1.11 · #c3d4e8
Pacific PanoramaΔE00 1.22 · #c0d6ea
Cry Baby BlueΔE00 1.277 · #c3d4e7
Mr. GlassΔE00 1.35 · #c0d5ef
Rain SongΔE00 1.371 · #c5d5e9
Arctic RainΔE00 1.419 · #c7daed
Murano Soft BlueΔE00 1.558 · #c5d6ee
Delicate Blue MistΔE00 1.589 · #bed7f0

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