Color

#2b1e2e

#2b1e2e
hex#2b1e2e
rgbrgb(43, 30, 46)
hslhsl(289, 21%, 15%)
oklchoklch(0.258 0.035 319.9)
Closest name: Black Velvet (#222233)Relative luminance 0.0164

Colors that go with #2b1e2e

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 →

#212e1e

#231e2e · #2e1e29

#2e2b1e · #1e2e2b

Split-complementary

Open in tool →

#292e1e · #1e2e23

#2e231e · #212e1e · #1e292e

Contrast

#2b1e2e as textRatioAAAA largeAAAFix
Aaon white
15.81:1passpasspassPasses AAA — no fix needed.
Aaon black
1.33:1failfailfail
  • AA: use #90659a as the text (4.51:1)
  • AAA: use #ab8ab2 as the text (7.01:1)
  • AA: or shift the background to #8a8a8a (4.58:1)
  • AAA: or shift the background to #adadad (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b1e2e as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#2b1e2e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b1e2e
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 #2b1e2e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b1e2e-be9fc1-a8cb62-2d1f2a-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