Color

#281d2a

#281d2a
hex#281d2a
rgbrgb(40, 29, 42)
hslhsl(291, 18%, 14%)
oklchoklch(0.25 0.029 321.2)
Closest name: Black Velvet (#222233)Relative luminance 0.015

Colors that go with #281d2a

Charcoal, Amber and Blue 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 →

#1f2a1d

#221d2a · #2a1d26

#2a281d · #1d2a28

Split-complementary

Open in tool →

#262a1d · #1d2a22

#2a221d · #1f2a1d · #1d262a

Contrast

#281d2a as textRatioAAAA largeAAAFix
Aaon white
16.16:1passpasspassPasses AAA — no fix needed.
Aaon black
1.3:1failfailfail
  • AA: use #906996 as the text (4.65:1)
  • AAA: use #aa8db0 as the text (7.15:1)
  • AA: or shift the background to #8a8a8a (4.68:1)
  • AAA: or shift the background to #ababab (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281d2a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#281d2a reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281d2a
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 #281d2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281d2a-bf9fc1-a4cb62-2d1f29-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