Noir Mystique
#1f180a
A neutral that has no useful hue — it reads as a grey. It is dark — it carries white text and needs care with black.
Hex
#1f180a
RGB
31, 24, 10
OKLCh
21.3% 0.027 83.6°
CIELAB (D50)
8.8, 1.8, 9.1
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 61% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 104.4; 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 5.6 and 5.8 and 7.6 — no red cone.
Text on this colour
White text
17.60:1 — passes AA
Black text
1.19:1 — fails AA
White text is the better of the two at17.60:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#1f180a
protanopia
#19190a · ΔE00 5.6
deuteranopia
#1a1a0a · ΔE00 5.8
tritanopia
#1c1c00 · ΔE00 7.6
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSoulless at ΔE00 2.937: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- SoullessΔE00 2.937 · #1b150d
- Nightshade BerriesΔE00 3.535 · #1b1811
- CrowsheadΔE00 3.881 · #1c1208
- Burnt CoffeeΔE00 3.999 · #271b10
- Black UmberΔE00 4.978 · #1f1916
- Black RaspberryΔE00 5.453 · #16110d
- BalsamicoΔE00 5.493 · #130d07
- DarknessΔE00 5.587 · #16160e
- King KongΔE00 5.593 · #161410
- Balsam of PeruΔE00 5.622 · #120d07
- Nuln Oil GlossΔE00 5.646 · #171310
- Orka BlackΔE00 5.868 · #27221f
8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.