Color

#281f2d

#281f2d
hex#281f2d
rgbrgb(40, 31, 45)
hslhsl(279, 18%, 15%)
oklchoklch(0.256 0.029 313.3)
Closest name: Black Velvet (#222233)Relative luminance 0.0162

Colors that go with #281f2d

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.

Real palettes that use #281f2d

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#242d1f

#211f2d · #2d1f2b

#2d281f · #1f2d28

Split-complementary

Open in tool →

#2b2d1f · #1f2d21

#2d211f · #242d1f · #1f2b2d

Contrast

#281f2d as textRatioAAAA largeAAAFix
Aaon white
15.86:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #896c99 as the text (4.67:1)
  • AAA: use #a690b2 as the text (7.25:1)
  • AA: or shift the background to #8a8a8a (4.59:1)
  • AAA: or shift the background to #adadad (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #281f2d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#281f2d reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #281f2d
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 #281f2d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/281f2d-b99fc1-b9cb62-2d1f2c-ebe9f1?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