Color

#aa1d18

#aa1d18
hex#aa1d18
rgbrgb(170, 29, 24)
hslhsl(2, 75%, 38%)
oklchoklch(0.477 0.177 28.4)
Closest name: Blood Rush (#aa2222)Relative luminance 0.0949

Colors that go with #aa1d18

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 →

#18a5aa

#aa185c · #aa6618

#18aa1d · #1d18aa

Split-complementary

Open in tool →

#18aa66 · #185caa

#5caa18 · #18a5aa · #6618aa

Contrast

#aa1d18 as textRatioAAAA largeAAAFix
Aaon white
7.25:1passpasspassPasses AAA — no fix needed.
Aaon black
2.9:1failfailfail
  • AA: use #e02b24 as the text (4.54:1)
  • AAA: use #ea706c as the text (7.03:1)
  • AA: or shift the background to #cccccc (4.51:1)
  • AAA: or shift the background to #fcfcfc (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #aa1d18 as the background.

Brands using this color

Fonts for this mood

#aa1d18 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #aa1d18
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 #aa1d18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/aa1d18-c4a29c-62cb9c-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