Color

#b73a38

#b73a38
hex#b73a38
rgbrgb(183, 58, 56)
hslhsl(1, 53%, 47%)
oklchoklch(0.531 0.162 25.3)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1338

Colors that go with #b73a38

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 #b73a38

Tints & shades

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

Harmonies

Complementary

Open in tool →

#38b5b7

#b73876 · #b77a38

#38b73a · #3a38b7

Split-complementary

Open in tool →

#38b77a · #3876b7

#76b738 · #38b5b7 · #7a38b7

Contrast

#b73a38 as textRatioAAAA largeAAAFix
Aaon white
5.71:1passpassfail
  • AAA: use #9c3230 as the text (7.21:1)
Aaon black
3.68:1failpassfail
  • AA: use #c74a48 as the text (4.5:1)
  • AAA: use #d67c7a as the text (7.02:1)
  • 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 #b73a38 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b73a38 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b73a38
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 #b73a38 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b73a38-c4a19c-62cb9a-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