Color

#f01c05

#f01c05
hex#f01c05
rgbrgb(240, 28, 5)
hslhsl(6, 96%, 48%)
oklchoklch(0.607 0.239 30.3)
Closest name: Assassin’s Red (#f60206)Relative luminance 0.1937

Colors that go with #f01c05

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 →

#05d8f0

#f00563 · #f09205

#05f01c · #1c05f0

Split-complementary

Open in tool →

#05f092 · #0563f0

#63f005 · #05d8f0 · #9205f0

Contrast

#f01c05 as textRatioAAAA largeAAAFix
Aaon white
4.31:1failpassfail
  • AA: use #e61b05 as the text (4.64:1)
  • AAA: use #af1504 as the text (7.16:1)
  • AA: or shift the background to #0d0d0d (4.51:1)
Aaon black
4.87:1passpassfail
  • AAA: use #fc6655 as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f01c05 as the background.

Brands using this color

Fonts for this mood

#f01c05 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f01c05
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 #f01c05 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f01c05-c4a59c-62cba3-2d271f-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