Color

#040b16

#040b16
hex#040b16
rgbrgb(4, 11, 22)
hslhsl(217, 69%, 5%)
oklchoklch(0.148 0.027 255.2)
Closest name: Dark Rift (#060b14)Relative luminance 0.0032

Colors that go with #040b16

Charcoal, Amber and Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#160f04

#041316 · #060416

#16040b · #0b1604

Split-complementary

Open in tool →

#160604 · #131604

#160413 · #160f04 · #041606

Contrast

#040b16 as textRatioAAAA largeAAAFix
Aaon white
19.73:1passpasspassPasses AAA — no fix needed.
Aaon black
1.06:1failfailfail
  • AA: use #3474da as the text (4.66:1)
  • AAA: use #6897e3 as the text (7.12:1)
  • AA: or shift the background to #7a7a7a (4.6:1)
  • AAA: or shift the background to #9c9c9c (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040b16 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#040b16 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040b16
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #040b16 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040b16-9ca7c4-df624e-201f2d-e9f0f1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md