Color

#b13735

#b13735
hex#b13735
rgbrgb(177, 55, 53)
hslhsl(1, 54%, 45%)
oklchoklch(0.517 0.159 25.4)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1234

Colors that go with #b13735

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 #b13735

Tints & shades

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

Harmonies

Complementary

Open in tool →

#35afb1

#b13571 · #b17535

#35b137 · #3735b1

Split-complementary

Open in tool →

#35b175 · #3571b1

#71b135 · #35afb1 · #7535b1

Contrast

#b13735 as textRatioAAAA largeAAAFix
Aaon white
6.06:1passpassfail
  • AAA: use #9d312f as the text (7.21:1)
Aaon black
3.47:1failpassfail
  • AA: use #c94c4a as the text (4.62:1)
  • AAA: use #d87f7d as the text (7.25:1)
  • AA: or shift the background to #dedede (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b13735 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b13735 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b13735
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 #b13735 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b13735-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