Color

#b1571b

#b1571b
hex#b1571b
rgbrgb(177, 87, 27)
hslhsl(24, 74%, 40%)
oklchoklch(0.558 0.136 49.2)
Closest name: Autumnal (#ad5928)Relative luminance 0.1624

Colors that go with #b1571b

Crimson, Royal Blue and Sea Green 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 →

#1b75b1

#b11b2a · #b1a21b

#1bb157 · #571bb1

Split-complementary

Open in tool →

#1bb1a2 · #1b2ab1

#2ab11b · #1b75b1 · #a21bb1

Contrast

#b1571b as textRatioAAAA largeAAAFix
Aaon white
4.94:1passpassfail
  • AAA: use #8a4315 as the text (7.26:1)
Aaon black
4.25:1failpassfail
  • AA: use #ba5b1c as the text (4.6:1)
  • AAA: use #e17b37 as the text (7.09:1)
  • AA: or shift the background to #f5f5f5 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b1571b as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#b1571b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b1571b
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 #b1571b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b1571b-c4b19c-62cbc2-2d2b1f-f1e9ea?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