HueComb

Alpine Expedition

#99eeff

A cyan that is muted. It is very light — it works as a page background, not as text.

Hex

#99eeff

RGB

153, 238, 255

OKLCh

90.1% 0.085 211.6°

CIELAB (D50)

89.1, -23.6, -16.8

What is true of this colour, and of no other

  • No other named colour in the set is within ΔE00 2 of it — it stands alone.
  • 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 15.2; on black, Lc -88.5. 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 23.2 and 23.1 and 23.3 — no red cone.

Text on this colour

White text

1.31:1 — fails AA

Black text

16.03:1 — passes AA

Black text is the better of the two at16.03:1. That is enough for body text.

As text on white, it needs to change

#278291 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

#99eeff

protanopia

#e6e6ff · ΔE00 23.2

deuteranopia

#dadaff · ΔE00 23.1

tritanopia

#cacaff · ΔE00 23.3

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPhoton Projector at ΔE00 2.045: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.

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