HueComb

Icy Plains

#cfdafb

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

#cfdafb

RGB

207, 218, 251

OKLCh

89.0% 0.047 270.8°

CIELAB (D50)

87.0, 1.1, -17.5

What is true of this colour, and of no other

  • No other named colour in the set is within ΔE00 2 of it — it stands alone.
  • It uses 89% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
  • As text on white it measures APCA Lc 19.1; on black, Lc -84.4. 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.
  • All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.

Text on this colour

White text

1.39:1 — fails AA

Black text

15.07:1 — passes AA

Black text is the better of the two at15.07:1. That is enough for body text.

As text on white, it needs to change

#6d7694 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

#cfdafb

protanopia

#d9d9fb · ΔE00 4.7

deuteranopia

#d7d7fb · ΔE00 4.7

tritanopia

#d5d5ff · ΔE00 4.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isArc Light at ΔE00 2.32: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.

  • Arc LightΔE00 2.32 · #ccddff
  • Flax BloomΔE00 2.377 · #d2d8f4
  • Frozen PeriwinkleΔE00 2.416 · #c9d1ef
  • Pale Phthalo BlueΔE00 2.641 · #ccd5ff
  • Garden FairyΔE00 3.105 · #ccd4ec
  • Arctic GlowΔE00 3.466 · #c9d1e9
  • Purple Pj’sΔE00 3.621 · #c7cee8
  • Fly a KiteΔE00 3.783 · #c8daf5
  • Light CuddleΔE00 3.828 · #cbd7ed
  • Lilac Cotton CandyΔE00 3.912 · #cdd7ec
  • Periwinkle GreyΔE00 3.925 · #c3cde6
  • AceΔE00 4.191 · #c7cce7

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