Color

#b9133f

#b9133f
hex#b9133f
rgbrgb(185, 19, 63)
hslhsl(344, 81%, 40%)
oklchoklch(0.506 0.193 15.2)
Closest name: Active Volcano (#bb1133)Relative luminance 0.1114

Colors that go with #b9133f

Royal Blue, Teal and Amber 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#13b98d

#b91392 · #b93a13

#3fb913 · #133fb9

Split-complementary

Open in tool →

#13b93a · #1392b9

#92b913 · #13b98d · #3a13b9

Contrast

#b9133f as textRatioAAAA largeAAAFix
Aaon white
6.51:1passpassfail
  • AAA: use #af123c as the text (7.06:1)
Aaon black
3.23:1failpassfail
  • AA: use #e7184f as the text (4.64:1)
  • AAA: use #ef6b8f as the text (7.17:1)
  • AA: or shift the background to #d9d9d9 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b9133f as the background.

Brands using this color

Fonts for this mood

#b9133f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b9133f
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 #b9133f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b9133f-c49ca2-62cb7c-2d221f-f1e9ef?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