Black Sabbath
#220022
A magenta that is muted. It is very dark — white text sits on it comfortably, black text does not.
Hex
#220022
RGB
34, 0, 34
OKLCh
17.7% 0.081 328.4°
CIELAB (D50)
4.1, 19.7, -13.7
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 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 105.0; 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.
- protanopia and deuteranopia and tritanopia shift it by ΔE00 13.3 and 13.5 and 29.4 — no red cone.
Text on this colour
White text
19.25:1 — passes AA
Black text
1.09:1 — fails AA
White text is the better of the two at19.25:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#220022
protanopia
#060622 · ΔE00 13.3
deuteranopia
#0f0f22 · ΔE00 13.5
tritanopia
#161600 · ΔE00 29.4
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDark Prom Queen at ΔE00 3.293: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Dark Prom QueenΔE00 3.293 · #2b0f2e
- Globe ThistleΔE00 3.724 · #2e0329
- SynallactidaΔE00 4.701 · #331133
- Cultist RobeΔE00 4.775 · #331233
- Meški BlackΔE00 5.319 · #1f0b1e
- PorphyrophobiaΔE00 5.494 · #2a0033
- Poisonous PurpleΔE00 5.599 · #2a0134
- Exquisite EggplantΔE00 5.803 · #330033
- Cured EggplantΔE00 5.897 · #380835
- BlacklistΔE00 6.03 · #221133
- InsideΔE00 6.17 · #221122
- Coal MineΔE00 6.186 · #220033
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.