Color

#291c40

#291c40
hex#291c40
rgbrgb(41, 28, 64)
hslhsl(262, 39%, 18%)
oklchoklch(0.262 0.066 298.4)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0167

Colors that go with #291c40

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 →

#33401c

#1c2140 · #3b1c40

#40291c · #1c4029

Split-complementary

Open in tool →

#403b1c · #21401c

#401c21 · #33401c · #1c403b

Contrast

#291c40 as textRatioAAAA largeAAAFix
Aaon white
15.74:1passpasspassPasses AAA — no fix needed.
Aaon black
1.33:1failfailfail
  • AA: use #8667bc as the text (4.68:1)
  • AAA: use #a28acc as the text (7.04:1)
  • AA: or shift the background to #8a8a8a (4.56:1)
  • AAA: or shift the background to #adadad (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 #291c40 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#291c40 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #291c40
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 #291c40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/291c40-af9cc4-dfce4e-2a1f2d-e9eaf1?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