Color

#aa0c09

#aa0c09
hex#aa0c09
rgbrgb(170, 12, 9)
hslhsl(1, 90%, 35%)
oklchoklch(0.468 0.186 28.9)
Closest name: All Systems Red (#b30103)Relative luminance 0.0883

Colors that go with #aa0c09

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 →

#09a7aa

#aa0957 · #aa5c09

#09aa0c · #0c09aa

Split-complementary

Open in tool →

#09aa5c · #0957aa

#57aa09 · #09a7aa · #5c09aa

Contrast

#aa0c09 as textRatioAAAA largeAAAFix
Aaon white
7.59:1passpasspassPasses AAA — no fix needed.
Aaon black
2.77:1failfailfail
  • AA: use #e9100c as the text (4.54:1)
  • AAA: use #f76664 as the text (7.04:1)
  • AA: or shift the background to #c9c9c9 (4.59:1)
  • AAA: or shift the background to #f7f7f7 (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 #aa0c09 as the background.

Brands using this color

Fonts for this mood

#aa0c09 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #aa0c09
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 #aa0c09 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/aa0c09-c4a19c-62cb9a-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