HueComb

Pāua

#2a2551

A violet that is nearly neutral — the hue shows only against a true grey. It is dark — it carries white text and needs care with black.

Hex

#2a2551

RGB

42, 37, 81

OKLCh

29.5% 0.078 285.8°

CIELAB (D50)

17.2, 12.5, -26.7

What is true of this colour, and of no other

  • One other named colour sits within ΔE00 2 of it.
  • It uses 45% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 100.7; 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

14.17:1 — passes AA

Black text

1.48:1 — fails AA

White text is the better of the two at14.17:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#2a2551

protanopia

#262651 · ΔE00 1.6

deuteranopia

#272751 · ΔE00 1.6

tritanopia

#28284a · ΔE00 2.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCeremonial Purple at ΔE00 1.345: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. 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.