Color

#b11029

#b11029
hex#b11029
rgbrgb(177, 16, 41)
hslhsl(351, 83%, 38%)
oklchoklch(0.486 0.188 22.1)
Closest name: firebrick (#b22222)Relative luminance 0.0988

Colors that go with #b11029

Royal Blue, Teal and Amber 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 →

#10b199

#b11079 · #b14910

#29b110 · #1029b1

Split-complementary

Open in tool →

#10b149 · #1079b1

#79b110 · #10b199 · #4910b1

Contrast

#b11029 as textRatioAAAA largeAAAFix
Aaon white
7.06:1passpasspassPasses AAA — no fix needed.
Aaon black
2.98:1failfailfail
  • AA: use #e91635 as the text (4.63:1)
  • AAA: use #f16a7e as the text (7.1:1)
  • AA: or shift the background to #cfcfcf (4.53:1)
  • AAA: or shift the background to #ffffff (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b11029 as the background.

Brands using this color

Fonts for this mood

#b11029 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b11029
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 #b11029 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b11029-c49c9e-62cb89-2d231f-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