HueComb

Mount Olympus

#d4ffff

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

#d4ffff

RGB

212, 255, 255

OKLCh

97.0% 0.044 196.5°

CIELAB (D50)

97.0, -14.2, -4.8

What is true of this colour, and of no other

  • 5 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 -102.4. 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.
  • protanopia and deuteranopia and tritanopia shift it by ΔE00 15.3 and 16.5 and 18.2 — no red cone.

Text on this colour

White text

1.07:1 — fails AA

Black text

19.55:1 — passes AA

Black text is the better of the two at19.55:1. That is enough for body text.

As text on white, it needs to change

#567e7e 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

#d4ffff

protanopia

#fbfbff · ΔE00 15.3

deuteranopia

#f3f3ff · ΔE00 16.5

tritanopia

#ebebff · ΔE00 18.2

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPale Blue at ΔE00 0.771: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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