Color

#aa1f03

#aa1f03
hex#aa1f03
rgbrgb(170, 31, 3)
hslhsl(10, 97%, 34%)
oklchoklch(0.478 0.177 32.3)
Closest name: Blood Rush (#aa2222)Relative luminance 0.0953

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#038fab

#ab033b · #ab7303

#03ab1f · #1f03ab

Split-complementary

Open in tool →

#03ab73 · #033bab

#3bab03 · #038fab · #7303ab

Contrast

#aa1f03 as textRatioAAAA largeAAAFix
Aaon white
7.23:1passpasspassPasses AAA — no fix needed.
Aaon black
2.91:1failfailfail
  • AA: use #e22903 as the text (4.55:1)
  • AAA: use #fc6445 as the text (7.05:1)
  • AA: or shift the background to #cfcfcf (4.64:1)
  • AAA: or shift the background to #fcfcfc (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #aa1f03 as the background.

Brands using this color

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

Fonts for this mood

#aa1f03 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #aa1f03
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #aa1f03 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/aa1f03-c4a79c-62cbaa-2d281f-f1e9ec?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