HueComb

Telemagenta

#aa22cc

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

#aa22cc

RGB

170, 34, 204

OKLCh

55.3% 0.247 318.1°

CIELAB (D50)

43.9, 68.2, -58.8

What is true of this colour, and of no other

  • One other named colour sits within ΔE00 2 of it.
  • It uses 92% 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 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 20.4 and 20.7 and 71.4 — no red cone.

Text on this colour

White text

5.51:1 — passes AA

Black text

3.81:1 — large text only

White text is the better of the two at5.51:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#aa22cc

protanopia

#4545cc · ΔE00 20.4

deuteranopia

#6565cb · ΔE00 20.7

tritanopia

#7d7d00 · ΔE00 71.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFerocious Fuchsia 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.