HueComb

Artist’s Charcoal

#37393e

A neutral that has no useful hue — it reads as a grey. It is dark — it carries white text and needs care with black.

Hex

#37393e

RGB

55, 57, 62

OKLCh

34.4% 0.009 268.4°

CIELAB (D50)

23.9, 0.0, -3.4

What is true of this colour, and of no other

  • 13 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
  • It uses almost none of the chroma available here: this is a grey with a trace of hue rather than a colour.
  • As text on white it measures APCA Lc 96.6; on black, Lc 0.0. 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

11.56:1 — passes AA

Black text

1.82:1 — fails AA

White text is the better of the two at11.56:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#37393e

protanopia

#39393e · ΔE00 1.3

deuteranopia

#38383e · ΔE00 1.4

tritanopia

#383843 · ΔE00 3.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isVulcan at ΔE00 0.695: 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.