HueComb

Nebula

#a104c3

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

#a104c3

RGB

161, 4, 195

OKLCh

52.2% 0.251 318.2°

CIELAB (D50)

40.1, 69.9, -59.7

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 79.2; on black, Lc -22.6. 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 20.0 and 20.8 and 70.6 — no red cone.

Text on this colour

White text

6.32:1 — passes AA

Black text

3.32:1 — large text only

White text is the better of the two at6.32:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#a104c3

protanopia

#3939c3 · ΔE00 20.0

deuteranopia

#5b5bc2 · ΔE00 20.8

tritanopia

#757500 · ΔE00 70.6

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 0.658: 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.