Underworld
#1e231c
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
#1e231c
RGB
30, 35, 28
OKLCh
24.9% 0.015 136.7°
CIELAB (D50)
13.0, -3.7, 3.9
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 only 20% of the chroma available at this lightness and hue — there is a far more vivid version of this colour inside sRGB.
- As text on white it measures APCA Lc 103.0; 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.
- tritanopia shifts it by ΔE00 11.5 — no blue cone.
Text on this colour
White text
16.00:1 — passes AA
Black text
1.31:1 — fails AA
White text is the better of the two at16.00:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#1e231c
protanopia
#22221c · ΔE00 3.4
deuteranopia
#22221c · ΔE00 3.5
tritanopia
#21212a · ΔE00 11.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMelanite Black Green at ΔE00 3.442: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Melanite Black GreenΔE00 3.442 · #282e27
- Bitter LiquoriceΔE00 3.575 · #262926
- Shadow WarriorΔE00 3.61 · #1a2421
- MarshlandΔE00 3.844 · #2b2e26
- Rangoon GreenΔE00 3.917 · #2b2e25
- PetroleumΔE00 3.919 · #21211d
- Midnight MossΔE00 4.185 · #242e28
- Green WaterlooΔE00 4.379 · #2c2d24
- QuartziteΔE00 4.424 · #232e26
- Pine TreeΔE00 4.45 · #2a2f23
- EternityΔE00 4.463 · #2d2f28
- MaireΔE00 4.664 · #2a2922
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.