HueComb

Peek-a-Blue

#c5e1e1

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

#c5e1e1

RGB

197, 225, 225

OKLCh

88.9% 0.030 196.6°

CIELAB (D50)

87.5, -9.6, -3.3

What is true of this colour, and of no other

  • 11 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 20% 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 18.5; on black, Lc -85.1. 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 11.4 and 12.4 and 19.5 — no red cone.

Text on this colour

White text

1.38:1 — fails AA

Black text

15.23:1 — passes AA

Black text is the better of the two at15.23:1. That is enough for body text.

As text on white, it needs to change

#627c7c 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

#c5e1e1

protanopia

#dedee1 · ΔE00 11.4

deuteranopia

#d9d9e2 · ΔE00 12.4

tritanopia

#d4d4ff · ΔE00 19.5

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isWishy-Washy Blue at ΔE00 0.825: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Wishy-Washy BlueΔE00 0.825 · #c6e0e1
  • Cold Air TurquoiseΔE00 1.221 · #c1dcdb
  • Mellifluous BlueΔE00 1.286 · #c9e1e0
  • Open AirΔE00 1.42 · #c7dfe0
  • Light Dante PeakΔE00 1.475 · #c6dedf
  • Babymoon BlueΔE00 1.509 · #c8e4e7
  • Starship TonicΔE00 1.529 · #cce7e8
  • Field FrostΔE00 1.891 · #cee9e8
  • Thin HeightsΔE00 1.907 · #cae0df
  • VentilatedΔE00 1.919 · #cde6e8
  • Wave SplashΔE00 1.976 · #cbe4e7
  • Icicle MintΔE00 2.073 · #cfe8e6

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