Color

#371f33

#371f33
hex#371f33
rgbrgb(55, 31, 51)
hslhsl(310, 28%, 17%)
oklchoklch(0.279 0.049 333)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0203

Colors that go with #371f33

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 →

#1f3723

#2f1f37 · #371f27

#33371f · #1f3337

Split-complementary

Open in tool →

#27371f · #1f372f

#372f1f · #1f3723 · #1f2737

Contrast

#371f33 as textRatioAAAA largeAAAFix
Aaon white
14.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #a35c97 as the text (4.54:1)
  • AAA: use #bb86b2 as the text (7.17:1)
  • AA: or shift the background to #8f8f8f (4.62:1)
  • AAA: or shift the background to #b3b3b3 (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 #371f33 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

#371f33 reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #371f33
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 #371f33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/371f33-c19fb7-83cb62-2d1f25-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