Color

#291f3d

#291f3d
hex#291f3d
rgbrgb(41, 31, 61)
hslhsl(260, 33%, 18%)
oklchoklch(0.267 0.056 297.9)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0179

Colors that go with #291f3d

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 →

#333d1f

#1f243d · #381f3d

#3d291f · #1f3d29

Split-complementary

Open in tool →

#3d381f · #243d1f

#3d1f24 · #333d1f · #1f3d38

Contrast

#291f3d as textRatioAAAA largeAAAFix
Aaon white
15.47:1passpasspassPasses AAA — no fix needed.
Aaon black
1.36:1failfailfail
  • AA: use #826ab4 as the text (4.67:1)
  • AAA: use #9f8cc5 as the text (7.03:1)
  • AA: or shift the background to #8c8c8c (4.6:1)
  • AAA: or shift the background to #b0b0b0 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #291f3d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#291f3d reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #291f3d
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 #291f3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/291f3d-ae9cc4-dfc94e-2a1f2d-e9ebf1?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