Sky High

#a7c2eb

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

#a7c2eb

RGB

167, 194, 235

OKLCh

80.8% 0.065 258.6°

CIELAB (D50)

77.5, -2.5, -23.7

What is true of this colour, and of no other

  • One other named colour sits within ΔE00 2 of it.
  • It uses 67% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 33.9; on black, Lc -68.7. 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 9.5 and 9.0 and 7.0 — no red cone.

Text on this colour

White text

1.82:1 — fails AA

Black text

11.56:1 — passes AA

Black text is the better of the two at11.56:1. That is enough for body text.

As text on white, it needs to change

#5f789e 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

#a7c2eb

protanopia

#bfbfeb · ΔE00 9.5

deuteranopia

#bbbbeb · ΔE00 9.0

tritanopia

#b5b5ff · ΔE00 7.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isArtesian Pool at ΔE00 1.778: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • Artesian PoolΔE00 1.778 · #a6bee1
  • Blue LipsΔE00 2.076 · #a6bce2
  • BlairΔE00 2.155 · #a1bde0
  • Teclis BlueΔE00 2.276 · #a3bae3
  • Sky BlueΔE00 2.343 · #9fb9e2
  • Promise KeepingΔE00 2.358 · #afc7e8
  • PylonΔE00 2.358 · #9fbadf
  • Tropical BlueΔE00 2.446 · #aec9eb
  • PromiseΔE00 2.464 · #acc0e2
  • Aegean MistΔE00 2.481 · #9cbbe2
  • Gallery BlueΔE00 2.604 · #9bbce4
  • Sail Into the HorizonΔE00 2.647 · #a3bbdc

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