HueComb

Heart of Ice

#f7fcff

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

#f7fcff

RGB

247, 252, 255

OKLCh

98.8% 0.007 233.6°

CIELAB (D50)

98.6, -1.3, -2.0

What is true of this colour, and of no other

  • 6 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 -105.3. 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

1.03:1 — fails AA

Black text

20.32:1 — passes AA

Black text is the better of the two at20.32:1. That is enough for body text.

As text on white, it needs to change

#73777a 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

#f7fcff

protanopia

#fbfbff · ΔE00 2.6

deuteranopia

#fbfbff · ΔE00 2.7

tritanopia

#fafaff · ΔE00 3.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDeutzia White at ΔE00 0.488: below 1.0 — an ordinary observer cannot tell these apart, even side by side. 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.