Color

#a7221b

#a7221b
hex#a7221b
rgbrgb(167, 34, 27)
hslhsl(3, 72%, 38%)
oklchoklch(0.476 0.17 28.6)
Closest name: Blood Rush (#aa2222)Relative luminance 0.0944

Colors that go with #a7221b

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 →

#1ba0a7

#a71b5a · #a7681b

#1ba722 · #221ba7

Split-complementary

Open in tool →

#1ba768 · #1b5aa7

#5aa71b · #1ba0a7 · #681ba7

Contrast

#a7221b as textRatioAAAA largeAAAFix
Aaon white
7.27:1passpasspassPasses AAA — no fix needed.
Aaon black
2.89:1failfailfail
  • AA: use #dc3128 as the text (4.51:1)
  • AAA: use #e7746e as the text (7.12:1)
  • AA: or shift the background to #cccccc (4.53:1)
  • AAA: or shift the background to #fcfcfc (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a7221b as the background.

Brands using this color

Fonts for this mood

#a7221b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a7221b
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 #a7221b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a7221b-c4a39c-62cb9d-2d261f-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