Color

#f41515

#f41515
hex#f41515
rgbrgb(244, 21, 21)
hslhsl(0, 91%, 52%)
oklchoklch(0.613 0.244 28.6)
Closest name: Assassin’s Red (#f60206)Relative luminance 0.1982

Colors that go with #f41515

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 →

#15f4f4

#f41585 · #f48515

#15f415 · #1515f4

Split-complementary

Open in tool →

#15f485 · #1585f4

#85f415 · #15f4f4 · #8515f4

Contrast

#f41515 as textRatioAAAA largeAAAFix
Aaon white
4.23:1failpassfail
  • AA: use #ea0b0b as the text (4.61:1)
  • AAA: use #b40808 as the text (7.05:1)
  • AA: or shift the background to #0f0f0f (4.53:1)
Aaon black
4.96:1passpassfail
  • AAA: use #f86868 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 #f41515 as the background.

Brands using this color

Fonts for this mood

#f41515 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f41515
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 #f41515 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f41515-c4a19c-62cb98-2d251f-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