Color

#b2301f

#b2301f
hex#b2301f
rgbrgb(178, 48, 31)
hslhsl(7, 70%, 41%)
oklchoklch(0.509 0.169 30.9)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1168

Colors that go with #b2301f

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 →

#1fa1b2

#b21f57 · #b27a1f

#1fb230 · #301fb2

Split-complementary

Open in tool →

#1fb27a · #1f57b2

#57b21f · #1fa1b2 · #7a1fb2

Contrast

#b2301f as textRatioAAAA largeAAAFix
Aaon white
6.3:1passpassfail
  • AAA: use #a52d1d as the text (7.02:1)
Aaon black
3.34:1failpassfail
  • AA: use #d93b26 as the text (4.6:1)
  • AAA: use #e47667 as the text (7.09:1)
  • AA: or shift the background to #dbdbdb (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b2301f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b2301f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b2301f
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 #b2301f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b2301f-c4a59c-62cba4-2d271f-f1e9ec?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