HueComb

Open Seas

#83afbc

A cyan that is nearly neutral — the hue shows only against a true grey. It is light — black text sits on it comfortably, white text does not.

Hex

#83afbc

RGB

131, 175, 188

OKLCh

72.7% 0.051 217.9°

CIELAB (D50)

68.6, -12.9, -11.7

What is true of this colour, and of no other

  • 3 other named colours sit within ΔE00 2 of it.
  • It uses only 39% 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 46.9; on black, Lc -55.2. 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 16.7 and 17.7 and 18.2 — no red cone.

Text on this colour

White text

2.38:1 — fails AA

Black text

8.82:1 — passes AA

Black text is the better of the two at8.82:1. That is enough for body text.

As text on white, it needs to change

#537d89 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

#83afbc

protanopia

#ababbc · ΔE00 16.7

deuteranopia

#a4a4bd · ΔE00 17.7

tritanopia

#9b9bff · 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 isSebastian Inlet at ΔE00 0.537: 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.