Color

#040b04

#040b04
hex#040b04
rgbrgb(4, 11, 4)
hslhsl(120, 47%, 3%)
oklchoklch(0.138 0.023 144.2)
Closest name: Blackn’t (#020f03)Relative luminance 0.0027

Colors that go with #040b04

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 →

#0b040b

#080b04 · #040b08

#04040b · #0b0404

Split-complementary

Open in tool →

#08040b · #0b0408

#04080b · #0b040b · #0b0804

Contrast

#040b04 as textRatioAAAA largeAAAFix
Aaon white
19.91:1passpasspassPasses AAA — no fix needed.
Aaon black
1.05:1failfailfail
  • AA: use #318731 as the text (4.64:1)
  • AAA: use #3eac3e as the text (7.18:1)
  • AA: or shift the background to #787878 (4.51:1)
  • AAA: or shift the background to #9c9c9c (7.25:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040b04 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#040b04 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040b04
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 #040b04 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040b04-a2bea5-994edf-1f2d25-edf1e9?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