HueComb

Ferocious Fuchsia

#aa00cc

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

#aa00cc

RGB

170, 0, 204

OKLCh

54.1% 0.261 318.7°

CIELAB (D50)

42.2, 73.0, -61.5

What is true of this colour, and of no other

  • 2 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 76.8; on black, Lc -24.9. 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 20.7 and 21.5 and 72.1 — no red cone.

Text on this colour

White text

5.86:1 — passes AA

Black text

3.58:1 — large text only

White text is the better of the two at5.86:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#aa00cc

protanopia

#3c3ccc · ΔE00 20.7

deuteranopia

#6060cb · ΔE00 21.5

tritanopia

#7b7b00 · ΔE00 72.1

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isTelemagenta at ΔE00 1.939: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

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