Caveman

#625c58

A neutral that has no useful hue — it reads as a grey. It is mid — the hardest range to put text on, either colour struggles.

Hex

#625c58

RGB

98, 92, 88

OKLCh

47.9% 0.010 56.1°

CIELAB (D50)

39.5, 1.9, 3.2

What is true of this colour, and of no other

  • 11 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 only 9% 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 82.6; on black, Lc -19.3. 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.
  • tritanopia shifts it by ΔE00 12.4 — no blue cone.

Text on this colour

White text

6.58:1 — passes AA

Black text

3.19:1 — large text only

White text is the better of the two at6.58:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#625c58

protanopia

#5d5d58 · ΔE00 3.8

deuteranopia

#5e5e58 · ΔE00 4.1

tritanopia

#5f5f41 · ΔE00 12.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMountain Quail at ΔE00 0.729: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Mountain QuailΔE00 0.729 · #605b57
  • Solid EmpireΔE00 0.897 · #635c59
  • Stone’s ThrowΔE00 1.189 · #605c58
  • Deep WalnutΔE00 1.443 · #615d58
  • BarkΔE00 1.479 · #5f5854
  • LaharΔE00 1.611 · #5f5855
  • Oswego TeaΔE00 1.767 · #665d59
  • Manor HouseΔE00 1.863 · #665d57
  • IroncladΔE00 1.915 · #615c55
  • Night Gull GreyΔE00 1.932 · #615d5c
  • Grey WerewolfΔE00 1.952 · #625f5c
  • Waza BearΔE00 2.078 · #5e5a59

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