HueComb

Thundercloud

#698589

A cyan that is nearly neutral — the hue shows only against a true grey. It is mid — the hardest range to put text on, either colour struggles.

Hex

#698589

RGB

105, 133, 137

OKLCh

59.6% 0.033 207.0°

CIELAB (D50)

53.5, -9.6, -5.6

What is true of this colour, and of no other

  • 5 other named colours sit within ΔE00 2 of it.
  • It uses only 32% 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 66.9; on black, Lc -34.8. 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 12.3 and 13.3 and 20.1 — no red cone.

Text on this colour

White text

3.95:1 — large text only

Black text

5.32:1 — passes AA

Black text is the better of the two at5.32:1. That is enough for body text.

As text on white, it needs to change

#607c80 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

#698589

protanopia

#828289 · ΔE00 12.3

deuteranopia

#7e7e8a · ΔE00 13.3

tritanopia

#7878c1 · ΔE00 20.1

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isWinter in Paris at ΔE00 1.363: 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.