HueComb

Violet Voltage

#a669db

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

Hex

#a669db

RGB

166, 105, 219

OKLCh

63.5% 0.173 306.8°

CIELAB (D50)

55.0, 41.0, -49.6

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 68% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 64.3; on black, Lc -37.3. 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 13.5 and 12.9 and 66.0 — no red cone.

Text on this colour

White text

3.71:1 — large text only

Black text

5.66:1 — passes AA

Black text is the better of the two at5.66:1. That is enough for body text.

As text on white, it needs to change

#975acb 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

#a669db

protanopia

#7272db · ΔE00 13.5

deuteranopia

#7f7fda · ΔE00 12.9

tritanopia

#8b8b00 · ΔE00 66.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRich Lavender at ΔE00 2.476: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. 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.