Squid’s Ink
#041330
A blue that is nearly neutral — the hue shows only against a true grey. It is very dark — white text sits on it comfortably, black text does not.
Hex
#041330
RGB
4, 19, 48
OKLCh
19.4% 0.062 260.7°
CIELAB (D50)
6.1, 3.1, -21.5
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 76% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 104.8; 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 tritanopia shift it by ΔE00 5.2 and 5.9 — no red cone.
Text on this colour
White text
18.41:1 — passes AA
Black text
1.14:1 — fails AA
White text is the better of the two at18.41:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#041330
protanopia
#121230 · ΔE00 5.2
deuteranopia
#0f0f30 · ΔE00 4.9
tritanopia
#0d0d3c · ΔE00 5.9
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isLiberty Blue at ΔE00 2.735: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Liberty BlueΔE00 2.735 · #0e1531
- VoidΔE00 3.041 · #050d25
- NavyΔE00 3.232 · #01153e
- Infinite NightΔE00 3.449 · #071037
- Mysterious DepthsΔE00 3.506 · #060929
- Cetacean BlueΔE00 3.752 · #001440
- Maastricht BlueΔE00 3.92 · #001c3d
- NightwalkerΔE00 4.013 · #161d3b
- Naval NightΔE00 4.129 · #011c39
- Illicit DarknessΔE00 4.299 · #00022e
- Dark KnightΔE00 4.311 · #151931
- Sombre NightΔE00 4.485 · #161e34
4 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.