Eight Ball

#03050a

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

Hex

#03050a

RGB

3, 5, 10

OKLCh

11.5% 0.015 261.3°

CIELAB (D50)

1.3, -0.0, -2.1

What is true of this colour, and of no other

  • 3 other named colours sit within ΔE00 2 of it.
  • It uses only 30% 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 106.0; 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

20.39:1 — passes AA

Black text

1.03:1 — fails AA

White text is the better of the two at20.39:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#03050a

protanopia

#05050a · ΔE00 0.8

deuteranopia

#04040a · ΔE00 0.9

tritanopia

#04040f · ΔE00 2.8

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isNinja at ΔE00 0.498: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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