Color

#fc0313

#fc0313
hex#fc0313
rgbrgb(252, 3, 19)
hslhsl(356, 98%, 50%)
oklchoklch(0.623 0.254 28.1)
Closest name: red (#ff0000)Relative luminance 0.2081

Colors that go with #fc0313

Charcoal, Dodger 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 →

#03fcec

#fc0390 · #fc6f03

#13fc03 · #0313fc

Split-complementary

Open in tool →

#03fc6f · #0390fc

#90fc03 · #03fcec · #6f03fc

Contrast

#fc0313 as textRatioAAAA largeAAAFix
Aaon white
4.07:1failpassfail
  • AA: use #ed0212 as the text (4.55:1)
  • AAA: use #b1020d as the text (7.28:1)
  • AA: or shift the background to #141414 (4.53:1)
Aaon black
5.16:1passpassfail
  • AAA: use #fd626d as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #fc0313 as the background.

Brands using this color

Fonts for this mood

#fc0313 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fc0313
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 #fc0313 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fc0313-c49e9c-62cb91-2d241f-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