Color

#b43813

#b43813
hex#b43813
rgbrgb(180, 56, 19)
hslhsl(14, 81%, 39%)
oklchoklch(0.52 0.166 35.9)
Closest name: Rust (#b7410e)Relative luminance 0.1258

Colors that go with #b43813

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 #b43813

Tints & shades

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

Harmonies

Complementary

Open in tool →

#138eb4

#b4133e · #b48913

#13b438 · #3813b4

Split-complementary

Open in tool →

#13b489 · #133eb4

#3eb413 · #138eb4 · #8913b4

Contrast

#b43813 as textRatioAAAA largeAAAFix
Aaon white
5.97:1passpassfail
  • AAA: use #9d3110 as the text (7.29:1)
Aaon black
3.52:1failpassfail
  • AA: use #d44316 as the text (4.61:1)
  • AAA: use #ec714b as the text (7.03:1)
  • AA: or shift the background to #e0e0e0 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b43813 as the background.

Brands using this color

Fonts for this mood

#b43813 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b43813
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 #b43813 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b43813-c4aa9c-62cbb1-2d291f-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