Color

#bb231b

#bb231b
hex#bb231b
rgbrgb(187, 35, 27)
hslhsl(3, 75%, 42%)
oklchoklch(0.514 0.188 28.9)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1185

Colors that go with #bb231b

Teal, Dark Olive Green and Slate Gray 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 #bb231b

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1bb3bb

#bb1b63 · #bb731b

#1bbb23 · #231bbb

Split-complementary

Open in tool →

#1bbb73 · #1b63bb

#63bb1b · #1bb3bb · #731bbb

Contrast

#bb231b as textRatioAAAA largeAAAFix
Aaon white
6.23:1passpassfail
  • AAA: use #aa1f18 as the text (7.2:1)
Aaon black
3.37:1failpassfail
  • AA: use #e02e24 as the text (4.59:1)
  • AAA: use #ea726c as the text (7.12:1)
  • AA: or shift the background to #dbdbdb (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #bb231b 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

#bb231b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #bb231b
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 #bb231b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bb231b-c4a39c-62cb9d-2d261f-f1e9ed?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