Purple Noir
#322c56
A violet that is nearly neutral — the hue shows only against a true grey. It is dark — it carries white text and needs care with black.
Hex
#322c56
RGB
50, 44, 86
OKLCh
32.2% 0.073 288.1°
CIELAB (D50)
20.4, 11.8, -24.9
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 40% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 98.9; on black, Lc 0.0. 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.
- All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.
Text on this colour
White text
12.88:1 — passes AA
Black text
1.63:1 — fails AA
White text is the better of the two at12.88:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#322c56
protanopia
#2d2d56 · ΔE00 2.0
deuteranopia
#2e2e56 · ΔE00 2.0
tritanopia
#2f2f4c · ΔE00 4.2
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDeep Sea Base at ΔE00 2.197: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Deep Sea BaseΔE00 2.197 · #2c2c57
- Cardinal MauveΔE00 2.249 · #2c284c
- PāuaΔE00 2.346 · #2a2551
- Midnight PieΔE00 2.535 · #372d52
- Ceremonial PurpleΔE00 2.574 · #2a2756
- Jakarta SkylineΔE00 2.79 · #3d325d
- Parachute PurpleΔE00 2.901 · #362852
- Haunted DreamsΔE00 3.316 · #333355
- GalaxeaΔE00 3.372 · #2e305e
- Astral AuraΔE00 3.41 · #363151
- Blackberry BlackΔE00 3.46 · #2e2848
- Violet PurpleΔE00 3.552 · #3a2f52
8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.