Color

#400e03

#400e03
hex#400e03
rgbrgb(64, 14, 3)
hslhsl(11, 91%, 13%)
oklchoklch(0.251 0.08 35.2)
Closest name: Black Chocolate (#441100)Relative luminance 0.0141

Colors that go with #400e03

Charcoal, Royal Blue and Sea Green 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 →

#03343f

#3f0316 · #3f2c03

#033f0e · #0e033f

Split-complementary

Open in tool →

#033f2c · #03163f

#163f03 · #03343f · #2c033f

Contrast

#400e03 as textRatioAAAA largeAAAFix
Aaon white
16.38:1passpasspassPasses AAA — no fix needed.
Aaon black
1.28:1failfailfail
  • AA: use #e0320b as the text (4.63:1)
  • AAA: use #f76a4b as the text (7.12:1)
  • AA: or shift the background to #878787 (4.56:1)
  • AAA: or shift the background to #ababab (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #400e03 as the background.

Brands using this color

Fonts for this mood

#400e03 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #400e03
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 #400e03 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/400e03-c4a89c-62cbab-2d281f-f1e9ec?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