HueComb

Friendly Frost

#bffbff

A cyan 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

#bffbff

RGB

191, 251, 255

OKLCh

94.9% 0.060 201.3°

CIELAB (D50)

94.7, -18.8, -8.4

What is true of this colour, and of no other

  • 3 other named colours sit within ΔE00 2 of it.
  • It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
  • As text on white it measures APCA Lc 0.0; on black, Lc -98.2. 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 19.2 and 20.6 and 22.0 — no red cone.

Text on this colour

White text

1.14:1 — fails AA

Black text

18.46:1 — passes AA

Black text is the better of the two at18.46:1. That is enough for body text.

As text on white, it needs to change

#478084 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

#bffbff

protanopia

#f5f5ff · ΔE00 19.2

deuteranopia

#ececff · ΔE00 20.6

tritanopia

#e0e0ff · ΔE00 22.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isThin Air at ΔE00 1.218: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

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