Color

#381b01

#381b01
hex#381b01
rgbrgb(56, 27, 1)
hslhsl(28, 96%, 11%)
oklchoklch(0.258 0.06 58.9)
Closest name: Close but No Cigar (#361d0a)Relative luminance 0.0163

Colors that go with #381b01

Blue Violet, Charcoal and Crimson 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.

Real palettes that use #381b01

Tints & shades

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

Harmonies

Complementary

Open in tool →

#011e37

#370103 · #373501

#01371a · #1a0137

Split-complementary

Open in tool →

#013735 · #010337

#033701 · #011e37 · #350137

Contrast

#381b01 as textRatioAAAA largeAAAFix
Aaon white
15.84:1passpasspassPasses AAA — no fix needed.
Aaon black
1.33:1failfailfail
  • AA: use #be5b04 as the text (4.69:1)
  • AAA: use #f07305 as the text (7.16:1)
  • AA: or shift the background to #8a8a8a (4.59:1)
  • AAA: or shift the background to #adadad (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 #381b01 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

#381b01 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #381b01
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 #381b01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/381b01-c4b39c-62cbc9-2d2c1f-f1e9ea?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