Color

#b71f22

#b71f22
hex#b71f22
rgbrgb(183, 31, 34)
hslhsl(359, 71%, 42%)
oklchoklch(0.504 0.186 26.4)
Closest name: firebrick (#b22222)Relative luminance 0.1116

Colors that go with #b71f22

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 →

#1fb7b5

#b71f6e · #b7691f

#22b71f · #1f22b7

Split-complementary

Open in tool →

#1fb769 · #1f6eb7

#6eb71f · #1fb7b5 · #691fb7

Contrast

#b71f22 as textRatioAAAA largeAAAFix
Aaon white
6.5:1passpassfail
  • AAA: use #aa1d1f as the text (7.23:1)
Aaon black
3.23:1failpassfail
  • AA: use #dc3235 as the text (4.55:1)
  • AAA: use #e77375 as the text (7.11:1)
  • AA: or shift the background to #d9d9d9 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b71f22 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b71f22 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b71f22
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 #b71f22 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b71f22-c4a09c-62cb96-2d251f-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