Color

#f01b0f

#f01b0f
hex#f01b0f
rgbrgb(240, 27, 15)
hslhsl(3, 88%, 50%)
oklchoklch(0.607 0.239 29.5)
Closest name: Assassin’s Red (#f60206)Relative luminance 0.1934

Colors that go with #f01b0f

Charcoal, Royal Blue and Sea Green 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 →

#0fe4f0

#f00f74 · #f08b0f

#0ff01b · #1b0ff0

Split-complementary

Open in tool →

#0ff08b · #0f74f0

#74f00f · #0fe4f0 · #8b0ff0

Contrast

#f01b0f as textRatioAAAA largeAAAFix
Aaon white
4.31:1failpassfail
  • AA: use #e6190f as the text (4.66:1)
  • AAA: use #b1140b as the text (7.06:1)
  • AA: or shift the background to #0d0d0d (4.51:1)
Aaon black
4.87:1passpassfail
  • AAA: use #f56861 as the text (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 #f01b0f as the background.

Brands using this color

Fonts for this mood

#f01b0f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f01b0f
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 #f01b0f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f01b0f-c4a39c-62cb9d-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