HueComb

Purple Pirate

#bb00aa

A magenta that is about as vivid as sRGB can show at this lightness. It is mid — the hardest range to put text on, either colour struggles.

Hex

#bb00aa

RGB

187, 0, 170

OKLCh

54.6% 0.244 333.4°

CIELAB (D50)

43.5, 72.3, -39.2

What is true of this colour, and of no other

  • 3 other named colours sit within ΔE00 2 of it.
  • It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
  • As text on white it measures APCA Lc 75.9; on black, Lc -25.8. 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 26.6 and 25.8 and 71.2 — no red cone.

Text on this colour

White text

5.69:1 — passes AA

Black text

3.69:1 — large text only

White text is the better of the two at5.69:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#bb00aa

protanopia

#4343aa · ΔE00 26.6

deuteranopia

#6a6aa8 · ΔE00 25.8

tritanopia

#888800 · ΔE00 71.2

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPunk Rock Purple at ΔE00 0.68: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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