HueComb

Prom Queen

#9b1dcd

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

#9b1dcd

RGB

155, 29, 205

OKLCh

53.0% 0.246 313.0°

CIELAB (D50)

41.0, 66.6, -64.1

What is true of this colour, and of no other

  • No other named colour in the set is within ΔE00 2 of it — it stands alone.
  • It uses 93% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
  • As text on white it measures APCA Lc 78.7; on black, Lc -23.1. 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 17.8 and 18.5 and 70.1 — no red cone.

Text on this colour

White text

6.09:1 — passes AA

Black text

3.45:1 — large text only

White text is the better of the two at6.09:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#9b1dcd

protanopia

#3e3ecd · ΔE00 17.8

deuteranopia

#5b5bcc · ΔE00 18.5

tritanopia

#727200 · ΔE00 70.1

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFoxy Fuchsia at ΔE00 2.248: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. 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.