Happy Cement

#979ea1

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

#979ea1

RGB

151, 158, 161

OKLCh

69.5% 0.009 225.1°

CIELAB (D50)

64.6, -2.1, -2.5

What is true of this colour, and of no other

  • 12 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 7% 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 52.7; on black, Lc -49.2. 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 10.7 — no blue cone.

Text on this colour

White text

2.72:1 — fails AA

Black text

7.72:1 — passes AA

Black text is the better of the two at7.72:1. That is enough for body text.

As text on white, it needs to change

#71787b 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

#979ea1

protanopia

#9d9da1 · ΔE00 3.8

deuteranopia

#9c9ca1 · ΔE00 4.1

tritanopia

#9b9bb4 · ΔE00 10.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isWindow Grey at ΔE00 0.494: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Window GreyΔE00 0.494 · #989ea1
  • UFOΔE00 0.614 · #989fa3
  • Prehistoric StoneΔE00 0.846 · #9aa0a3
  • Tank HeadΔE00 0.925 · #9aa0a2
  • Drizzling MistΔE00 1.031 · #989d9f
  • Metropolis MoodΔE00 1.069 · #99a1a5
  • Soft PumiceΔE00 1.382 · #949ea2
  • Aegean SplendourΔE00 1.445 · #9ba0a4
  • DustbluΔE00 1.5 · #959ba0
  • Pencil SketchΔE00 1.656 · #999d9e
  • Grey River RockΔE00 1.923 · #99a1a1
  • Coastal Sea FogΔE00 1.995 · #9ea4a6

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