Color

#b4081f

#b4081f
hex#b4081f
rgbrgb(180, 8, 31)
hslhsl(352, 91%, 37%)
oklchoklch(0.488 0.194 24.6)
Closest name: Bullseye (#b9030a)Relative luminance 0.0998

Colors that go with #b4081f

Royal Blue, Steel Blue and Teal 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 →

#08b49d

#b40875 · #b44708

#1fb408 · #081fb4

Split-complementary

Open in tool →

#08b447 · #0875b4

#75b408 · #08b49d · #4708b4

Contrast

#b4081f as textRatioAAAA largeAAAFix
Aaon white
7.01:1passpasspassPasses AAA — no fix needed.
Aaon black
3:1failfailfail
  • AA: use #ea0b29 as the text (4.58:1)
  • AAA: use #f86377 as the text (7.04:1)
  • AA: or shift the background to #cfcfcf (4.5:1)
  • AAA: or shift the background to #ffffff (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b4081f as the background.

Brands using this color

Fonts for this mood

#b4081f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b4081f
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 #b4081f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b4081f-c49c9d-62cb8a-2d231f-f1e9ee?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