Moonless Mystery
#1e2433
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
#1e2433
RGB
30, 36, 51
OKLCh
26.2% 0.030 267.5°
CIELAB (D50)
14.1, 0.7, -10.8
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 17% 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 102.4; 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.
- tritanopia shifts it by ΔE00 7.1 — no blue cone.
Text on this colour
White text
15.49:1 — passes AA
Black text
1.36:1 — fails AA
White text is the better of the two at15.49:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#1e2433
protanopia
#232333 · ΔE00 3.6
deuteranopia
#222233 · ΔE00 3.8
tritanopia
#21213d · ΔE00 7.1
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDark at ΔE00 2.301: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- DarkΔE00 2.301 · #1b2431
- Sky CaptainΔE00 3.11 · #242933
- Coarse WoolΔE00 3.436 · #181b26
- InfinityΔE00 3.656 · #222831
- Abyssal Anchorfish BlueΔE00 3.68 · #1b2632
- Diamond BlackΔE00 3.904 · #2b303e
- Blue CoalΔE00 3.918 · #2b3040
- Mangu BlackΔE00 3.953 · #292938
- Black RockΔE00 4.207 · #2c2d3c
- Black GreyΔE00 4.385 · #24272e
- Closed ShutterΔE00 4.878 · #25252c
- Black RussianΔE00 5.043 · #24252b
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.