Serious Cloud

#7d848b

A neutral that has no useful hue — it reads as a grey. It is light — black text sits on it comfortably, white text does not.

Hex

#7d848b

RGB

125, 132, 139

OKLCh

61.0% 0.013 248.0°

CIELAB (D50)

54.7, -1.6, -4.7

What is true of this colour, and of no other

  • 3 other named colours sit within ΔE00 2 of it.
  • It uses only 8% 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 65.4; on black, Lc -36.2. 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.
  • tritanopia shifts it by ΔE00 10.1 — no blue cone.

Text on this colour

White text

3.79:1 — large text only

Black text

5.55:1 — passes AA

Black text is the better of the two at5.55:1. That is enough for body text.

As text on white, it needs to change

#71787e 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

#7d848b

protanopia

#83838b · ΔE00 3.9

deuteranopia

#82828b · ΔE00 4.2

tritanopia

#81819d · ΔE00 10.1

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMilestone at ΔE00 1.008: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • MilestoneΔE00 1.008 · #7f848a
  • Great Coat GreyΔE00 1.625 · #7f8488
  • Adeptus BattlegreyΔE00 1.673 · #7c8286
  • Smoky StudioΔE00 2.02 · #7e8590
  • Downing SlateΔE00 2.033 · #777f86
  • Heavy GreyΔE00 2.095 · #82868a
  • WolfΔE00 2.205 · #788389
  • Scattered ShowersΔE00 2.251 · #7b8285
  • London RoadΔE00 2.445 · #7f878a
  • Cold Trade WindsΔE00 2.45 · #7e8692
  • SoftwareΔE00 2.582 · #7f8486
  • Sea LionΔE00 2.583 · #7f8793

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