Color

#bb431b

#bb431b
hex#bb431b
rgbrgb(187, 67, 27)
hslhsl(15, 75%, 42%)
oklchoklch(0.545 0.163 37.5)
Closest name: Bolognese (#bb4400)Relative luminance 0.1466

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1b93bb

#bb1b43 · #bb931b

#1bbb43 · #431bbb

Split-complementary

Open in tool →

#1bbb93 · #1b43bb

#43bb1b · #1b93bb · #931bbb

Contrast

#bb431b as textRatioAAAA largeAAAFix
Aaon white
5.34:1passpassfail
  • AAA: use #9c3816 as the text (7.02:1)
Aaon black
3.93:1failpassfail
  • AA: use #cd491d as the text (4.57:1)
  • AAA: use #e67651 as the text (7.07:1)
  • AA: or shift the background to #ededed (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #bb431b 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

#bb431b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #bb431b
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #bb431b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bb431b-c4ab9c-62cbb2-2d291f-f1e9eb?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