Color

#370b2b

#370b2b
hex#370b2b
rgbrgb(55, 11, 43)
hslhsl(316, 67%, 13%)
oklchoklch(0.241 0.081 340.6)
Closest name: Dark Sanctuary (#3f012c)Relative luminance 0.0123

Colors that go with #370b2b

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 →

#0b3717

#2d0b37 · #370b15

#2c370b · #0b2c37

Split-complementary

Open in tool →

#15370b · #0b372d

#372d0b · #0b3717 · #0b1537

Contrast

#370b2b as textRatioAAAA largeAAAFix
Aaon white
16.86:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #d129a4 as the text (4.56:1)
  • AAA: use #e26ac2 as the text (7.07:1)
  • AA: or shift the background to #858585 (4.57:1)
  • AAA: or shift the background to #a8a8a8 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #370b2b 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

#370b2b reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #370b2b
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 #370b2b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/370b2b-c19fb4-79cb62-2d1f23-efe9f1?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