Color

#391d2c

#391d2c
hex#391d2c
rgbrgb(57, 29, 44)
hslhsl(328, 33%, 17%)
oklchoklch(0.275 0.049 347.5)
Closest name: Black-Hearted (#3e1825)Relative luminance 0.0193

Colors that go with #391d2c

Charcoal, Dark Olive Green 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 →

#1d3a2a

#391d3a · #3a1d1e

#2c3a1d · #1d2c3a

Split-complementary

Open in tool →

#1e3a1d · #1d3a39

#3a391d · #1d3a2a · #1d1e3a

Contrast

#391d2c as textRatioAAAA largeAAAFix
Aaon white
15.15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.39:1failfailfail
  • AA: use #ad5c87 as the text (4.66:1)
  • AAA: use #c185a5 as the text (7.17:1)
  • AA: or shift the background to #8c8c8c (4.51:1)
  • AAA: or shift the background to #b3b3b3 (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #391d2c 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

#391d2c reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #391d2c
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 #391d2c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/391d2c-c19fad-64cb62-2d1f21-f1e9f1?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