Starless Night

#3e4855

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

#3e4855

RGB

62, 72, 85

OKLCh

39.8% 0.026 255.1°

CIELAB (D50)

30.1, -1.6, -9.2

What is true of this colour, and of no other

  • 16 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 19% 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 91.4; on black, Lc -10.9. 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 5.7 and 6.1 and 11.0 — no red cone.

Text on this colour

White text

9.28:1 — passes AA

Black text

2.26:1 — fails AA

White text is the better of the two at9.28:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#3e4855

protanopia

#474755 · ΔE00 5.7

deuteranopia

#454555 · ΔE00 6.1

tritanopia

#434369 · ΔE00 11.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isWhispered Secret at ΔE00 0.492: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Whispered SecretΔE00 0.492 · #3f4855
  • Cape StormΔE00 0.617 · #3c4754
  • Blue Sou’westerΔE00 0.63 · #404956
  • RhinoΔE00 0.78 · #3d4653
  • Boeing BlueΔE00 0.821 · #3d4652
  • Soft SteelΔE00 0.922 · #404854
  • Bank BlueΔE00 1.067 · #3e4652
  • Dark NightΔE00 1.255 · #404b57
  • Dutch LicoriceΔE00 1.602 · #404b56
  • Bronze BlueΔE00 1.675 · #3a4856
  • CavalryΔE00 1.713 · #3f4c5a
  • Pit StopΔE00 1.738 · #414958

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