Color

#400d2e

#400d2e
hex#400d2e
rgbrgb(64, 13, 46)
hslhsl(321, 66%, 15%)
oklchoklch(0.262 0.088 345.2)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0158

Colors that go with #400d2e

Charcoal, Crimson 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 →

#0d3f1f

#380d3f · #3f0d15

#2e3f0d · #0d2e3f

Split-complementary

Open in tool →

#153f0d · #0d3f38

#3f380d · #0d3f1f · #0d153f

Contrast

#400d2e as textRatioAAAA largeAAAFix
Aaon white
15.97:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #d42b99 as the text (4.6:1)
  • AAA: use #e26fb9 as the text (7.21:1)
  • AA: or shift the background to #8a8a8a (4.63:1)
  • AAA: or shift the background to #adadad (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #400d2e 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

#400d2e reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #400d2e
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 #400d2e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/400d2e-c19fb1-70cb62-2d1f22-f0e9f1?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