Dark
#1b2431
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
#1b2431
RGB
27, 36, 49
OKLCh
25.8% 0.028 257.5°
CIELAB (D50)
13.8, -1.0, -10.0
What is true of this colour, and of no other
- One other named colour sits within ΔE00 2 of it.
- It uses only 30% 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 102.6; 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 5.4 and 5.8 and 10.1 — no red cone.
Text on this colour
White text
15.63:1 — passes AA
Black text
1.34:1 — fails AA
White text is the better of the two at15.63:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#1b2431
protanopia
#232331 · ΔE00 5.4
deuteranopia
#222231 · ΔE00 5.8
tritanopia
#202040 · ΔE00 10.1
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isAbyssal Anchorfish Blue at ΔE00 1.465: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Abyssal Anchorfish BlueΔE00 1.465 · #1b2632
- Moonless MysteryΔE00 2.301 · #1e2433
- InfinityΔE00 2.627 · #222831
- Sky CaptainΔE00 2.775 · #242933
- Black GreyΔE00 4.019 · #24272e
- Coarse WoolΔE00 4.02 · #181b26
- Chimney SweepΔE00 4.168 · #272f38
- Blue-BlackΔE00 4.534 · #24313d
- Diamond BlackΔE00 4.623 · #2b303e
- Deep Space EchoΔE00 4.753 · #292e35
- Black BeautyΔE00 4.802 · #23262b
- Black PearlΔE00 4.932 · #1e272c
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.