Infinity
#222831
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
#222831
RGB
34, 40, 49
OKLCh
27.5% 0.019 258.4°
CIELAB (D50)
15.8, -0.8, -6.8
What is true of this colour, and of no other
- 2 other named colours sit within ΔE00 2 of it.
- It uses only 18% 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 101.7; 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 8.8 — no blue cone.
Text on this colour
White text
14.83:1 — passes AA
Black text
1.42:1 — fails AA
White text is the better of the two at14.83:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#222831
protanopia
#272731 · ΔE00 3.9
deuteranopia
#262631 · ΔE00 4.2
tritanopia
#25253d · ΔE00 8.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSky Captain at ΔE00 1.033: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Sky CaptainΔE00 1.033 · #242933
- Black GreyΔE00 1.781 · #24272e
- Deep Space EchoΔE00 2.272 · #292e35
- Chimney SweepΔE00 2.367 · #272f38
- Black BeautyΔE00 2.548 · #23262b
- Abyssal Anchorfish BlueΔE00 2.56 · #1b2632
- DarkΔE00 2.627 · #1b2431
- Night SkyΔE00 2.782 · #292b31
- Dark GunmetalΔE00 3.012 · #222429
- Suit BlueΔE00 3.113 · #2b3036
- Blue CharcoalΔE00 3.124 · #262b2f
- Black RussianΔE00 3.134 · #24252b
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.