HueComb

Sweet Desire

#aa33ee

A violet 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

#aa33ee

RGB

170, 51, 238

OKLCh

58.9% 0.261 309.1°

CIELAB (D50)

47.6, 68.4, -72.1

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 87% 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 71.7; on black, Lc -30.0. 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.
  • protanopia and deuteranopia and tritanopia shift it by ΔE00 17.2 and 17.6 and 72.6 — no red cone.

Text on this colour

White text

4.75:1 — passes AA

Black text

4.42:1 — large text only

White text is the better of the two at4.75:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#aa33ee

protanopia

#4d4dee · ΔE00 17.2

deuteranopia

#6969ed · ΔE00 17.6

tritanopia

#808000 · ΔE00 72.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCool Purple at ΔE00 2.372: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.

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