Color

#f00a1d

#f00a1d
hex#f00a1d
rgbrgb(240, 10, 29)
hslhsl(355, 92%, 49%)
oklchoklch(0.603 0.243 27.1)
Closest name: Alarm (#ec0003)Relative luminance 0.1883

Colors that go with #f00a1d

Charcoal, Royal Blue and Steel Blue 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 →

#0af0dd

#f00a90 · #f06a0a

#1df00a · #0a1df0

Split-complementary

Open in tool →

#0af06a · #0a90f0

#90f00a · #0af0dd · #6a0af0

Contrast

#f00a1d as textRatioAAAA largeAAAFix
Aaon white
4.41:1failpassfail
  • AA: use #eb0a1d as the text (4.57:1)
  • AAA: use #b00715 as the text (7.27:1)
  • AA: or shift the background to #080808 (4.55:1)
Aaon black
4.77:1passpassfail
  • AAA: use #f96773 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f00a1d as the background.

Brands using this color

Fonts for this mood

#f00a1d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f00a1d
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 #f00a1d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f00a1d-c49e9c-62cb8f-2d241f-f1e9ee?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