Color

#af0904

#af0904
hex#af0904
rgbrgb(175, 9, 4)
hslhsl(2, 96%, 35%)
oklchoklch(0.476 0.191 29.4)
Closest name: All Systems Red (#b30103)Relative luminance 0.0932

Colors that go with #af0904

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 →

#04a9af

#af0454 · #af5f04

#04af09 · #0904af

Split-complementary

Open in tool →

#04af5f · #0454af

#54af04 · #04a9af · #5f04af

Contrast

#af0904 as textRatioAAAA largeAAAFix
Aaon white
7.33:1passpasspassPasses AAA — no fix needed.
Aaon black
2.86:1failfailfail
  • AA: use #eb0c05 as the text (4.59:1)
  • AAA: use #fc645f as the text (7.13:1)
  • AA: or shift the background to #cccccc (4.57:1)
  • AAA: or shift the background to #fafafa (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #af0904 as the background.

Brands using this color

Fonts for this mood

#af0904 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #af0904
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 #af0904 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/af0904-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