Color

#b7291f

#b7291f
hex#b7291f
rgbrgb(183, 41, 31)
hslhsl(4, 71%, 42%)
oklchoklch(0.511 0.18 29.1)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1175

Colors that go with #b7291f

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1fadb7

#b71f61 · #b7751f

#1fb729 · #291fb7

Split-complementary

Open in tool →

#1fb775 · #1f61b7

#61b71f · #1fadb7 · #751fb7

Contrast

#b7291f as textRatioAAAA largeAAAFix
Aaon white
6.27:1passpassfail
  • AAA: use #a6251c as the text (7.23:1)
Aaon black
3.35:1failpassfail
  • AA: use #db3529 as the text (4.55:1)
  • AAA: use #e6736b as the text (7.03:1)
  • AA: or shift the background to #dbdbdb (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b7291f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b7291f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b7291f
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 #b7291f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b7291f-c4a39c-62cb9f-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