Color

#a7451b

#a7451b
hex#a7451b
rgbrgb(167, 69, 27)
hslhsl(18, 72%, 38%)
oklchoklch(0.515 0.14 41.2)
Closest name: Barbarossa (#a84734)Relative luminance 0.1255

Colors that go with #a7451b

Crimson, Denim 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 →

#1b7da7

#a71b37 · #a78b1b

#1ba745 · #451ba7

Split-complementary

Open in tool →

#1ba78b · #1b37a7

#37a71b · #1b7da7 · #8b1ba7

Contrast

#a7451b as textRatioAAAA largeAAAFix
Aaon white
5.98:1passpassfail
  • AAA: use #953e18 as the text (7.05:1)
Aaon black
3.51:1failpassfail
  • AA: use #c55220 as the text (4.6:1)
  • AAA: use #e2784b as the text (7.02:1)
  • AA: or shift the background to #e0e0e0 (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 #a7451b 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

#a7451b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a7451b
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 #a7451b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a7451b-c4ad9c-62cbb8-2d291f-f1e9eb?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