Color

#240017

#240017
hex#240017
rgbrgb(36, 0, 23)
hslhsl(322, 100%, 7%)
oklchoklch(0.173 0.074 345.4)
Closest name: Belladonna (#220011)Relative luminance 0.0044

Colors that go with #240017

Charcoal, Crimson 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.

Real palettes that use #240017

Tints & shades

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

Harmonies

Complementary

Open in tool →

#00240d

#1f0024 · #240005

#172400 · #001724

Split-complementary

Open in tool →

#052400 · #00241f

#241f00 · #00240d · #000524

Contrast

#240017 as textRatioAAAA largeAAAFix
Aaon white
19.31:1passpasspassPasses AAA — no fix needed.
Aaon black
1.09:1failfailfail
  • AA: use #e0008e as the text (4.56:1)
  • AAA: use #ff4dbe as the text (7.06:1)
  • AA: or shift the background to #7d7d7d (4.69:1)
  • AAA: or shift the background to #9c9c9c (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #240017 as the background.

Brands using this color

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

Fonts for this mood

#240017 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #240017
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 #240017 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/240017-c19fb1-6ecb62-2d1f22-f0e9f1?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