Color

#291c2b

#291c2b
hex#291c2b
rgbrgb(41, 28, 43)
hslhsl(292, 21%, 14%)
oklchoklch(0.249 0.033 321.9)
Closest name: Black Velvet (#222233)Relative luminance 0.0148

Colors that go with #291c2b

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 →

#1e2b1c

#221c2b · #2b1c26

#2b291c · #1c2b29

Split-complementary

Open in tool →

#262b1c · #1c2b22

#2b221c · #1e2b1c · #1c262b

Contrast

#291c2b as textRatioAAAA largeAAAFix
Aaon white
16.21:1passpasspassPasses AAA — no fix needed.
Aaon black
1.3:1failfailfail
  • AA: use #93659a as the text (4.57:1)
  • AAA: use #ad8ab2 as the text (7.06:1)
  • AA: or shift the background to #878787 (4.51:1)
  • AAA: or shift the background to #ababab (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #291c2b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#291c2b reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #291c2b
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 #291c2b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/291c2b-c09fc1-a3cb62-2d1f29-ece9f1?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