Color

#b43e31

#b43e31
hex#b43e31
rgbrgb(180, 62, 49)
hslhsl(6, 57%, 45%)
oklchoklch(0.529 0.156 29.5)
Closest name: Barbarossa (#a84734)Relative luminance 0.1337

Colors that go with #b43e31

Royal Blue, Sea Green and Steel 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 #b43e31

Tints & shades

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

Harmonies

Complementary

Open in tool →

#31a7b4

#b43166 · #b48031

#31b43e · #3e31b4

Split-complementary

Open in tool →

#31b480 · #3166b4

#66b431 · #31a7b4 · #8031b4

Contrast

#b43e31 as textRatioAAAA largeAAAFix
Aaon white
5.72:1passpassfail
  • AAA: use #9c362b as the text (7.06:1)
Aaon black
3.67:1failpassfail
  • AA: use #ca4d3f as the text (4.64:1)
  • AAA: use #d97d73 as the text (7.13:1)
  • AA: or shift the background to #e6e6e6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b43e31 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b43e31 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b43e31
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 #b43e31 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b43e31-c4a59c-62cba3-2d271f-f1e9ec?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