Color

#331f31

#331f31
hex#331f31
rgbrgb(51, 31, 49)
hslhsl(306, 24%, 16%)
oklchoklch(0.272 0.043 330.2)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0191

Colors that go with #331f31

Dark Olive Green, Teal 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.

Real palettes that use #331f31

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#1f3321

#2b1f33 · #331f27

#31331f · #1f3133

Split-complementary

Open in tool →

#27331f · #1f332b

#332b1f · #1f3321 · #1f2733

Contrast

#331f31 as textRatioAAAA largeAAAFix
Aaon white
15.21:1passpasspassPasses AAA — no fix needed.
Aaon black
1.38:1failfailfail
  • AA: use #9e6198 as the text (4.62:1)
  • AAA: use #b587b1 as the text (7.07:1)
  • AA: or shift the background to #8c8c8c (4.52:1)
  • AAA: or shift the background to #b0b0b0 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #331f31 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

#331f31 reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331f31
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 #331f31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331f31-c19fb9-8acb62-2d1f26-eee9f1?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