Color

#331f33

#331f33
hex#331f33
rgbrgb(51, 31, 51)
hslhsl(300, 24%, 16%)
oklchoklch(0.273 0.046 326.7)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0192

Colors that go with #331f33

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.

Real palettes that use #331f33

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1f331f

#291f33 · #331f29

#33331f · #1f3333

Split-complementary

Open in tool →

#29331f · #1f3329

#33291f · #1f331f · #1f2933

Contrast

#331f33 as textRatioAAAA largeAAAFix
Aaon white
15.17:1passpasspassPasses AAA — no fix needed.
Aaon black
1.38:1failfailfail
  • AA: use #9b5f9b as the text (4.5:1)
  • AAA: use #b587b5 as the text (7.1:1)
  • 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 #331f33 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

#331f33 reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #331f33
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 #331f33 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/331f33-c19fbd-95cb62-2d1f27-ede9f1?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