Color

#04181a

#04181a
hex#04181a
rgbrgb(4, 24, 26)
hslhsl(185, 73%, 6%)
oklchoklch(0.193 0.027 203.8)
Closest name: Black Stallion (#0e191c)Relative luminance 0.0075

Colors that go with #04181a

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 →

#1a0604

#041a11 · #040d1a

#1a0419 · #191a04

Split-complementary

Open in tool →

#1a040d · #1a1104

#11041a · #1a0604 · #0d1a04

Contrast

#04181a as textRatioAAAA largeAAAFix
Aaon white
18.25:1passpasspassPasses AAA — no fix needed.
Aaon black
1.15:1failfailfail
  • AA: use #16838d as the text (4.67:1)
  • AAA: use #1ca8b5 as the text (7.32:1)
  • AA: or shift the background to #808080 (4.62:1)
  • AAA: or shift the background to #a1a1a1 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04181a as the background.

Brands using this color

Fonts for this mood

#04181a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04181a
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 #04181a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04181a-a2b8be-df4e88-1f262d-e9f1ee?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