Petrified Purple

#9c87c1

A violet that is muted. It is light — black text sits on it comfortably, white text does not.

Hex

#9c87c1

RGB

156, 135, 193

OKLCh

66.4% 0.087 300.7°

CIELAB (D50)

59.9, 17.1, -27.4

What is true of this colour, and of no other

  • 4 other named colours sit within ΔE00 2 of it.
  • It uses 41% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 58.7; on black, Lc -43.1. 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 6.3 and 5.9 and 24.6 — no red cone.

Text on this colour

White text

3.16:1 — large text only

Black text

6.65:1 — passes AA

Black text is the better of the two at6.65:1. That is enough for body text.

As text on white, it needs to change

#826da5 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#9c87c1

protanopia

#8a8ac1 · ΔE00 6.3

deuteranopia

#8e8ec1 · ΔE00 5.9

tritanopia

#92928c · ΔE00 24.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCold Purple at ΔE00 1.361: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • Cold PurpleΔE00 1.361 · #9d8abf
  • Sand VerbenaΔE00 1.546 · #9d89bd
  • Sunlit AlliumΔE00 1.628 · #9787bb
  • BougainvillaeaΔE00 1.704 · #9884b9
  • Lilac PurpleΔE00 2.342 · #a183c0
  • Magic CarpetΔE00 2.437 · #9488be
  • Classic BouquetΔE00 2.644 · #a38bbf
  • Purple Mountains’ MajestyΔE00 2.649 · #9d81ba
  • HermosaΔE00 2.841 · #9a8ec1
  • Heliotropic MauveΔE00 3.139 · #9187bd
  • Peony MauveΔE00 3.23 · #9f86b7
  • Violet TulipΔE00 3.404 · #9e91c3

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