Color

#b0071b

#b0071b
hex#b0071b
rgbrgb(176, 7, 27)
hslhsl(353, 92%, 36%)
oklchoklch(0.479 0.191 25.4)
Closest name: All Systems Red (#b30103)Relative luminance 0.0946

Colors that go with #b0071b

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 →

#07b09d

#b00770 · #b04807

#1bb007 · #071bb0

Split-complementary

Open in tool →

#07b048 · #0770b0

#70b007 · #07b09d · #4807b0

Contrast

#b0071b as textRatioAAAA largeAAAFix
Aaon white
7.26:1passpasspassPasses AAA — no fix needed.
Aaon black
2.89:1failfailfail
  • AA: use #eb0a24 as the text (4.6:1)
  • AAA: use #f96778 as the text (7.24:1)
  • AA: or shift the background to #cccccc (4.52:1)
  • AAA: or shift the background to #fcfcfc (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b0071b as the background.

Brands using this color

Fonts for this mood

#b0071b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b0071b
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 #b0071b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b0071b-c49c9c-62cb8c-2d241f-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