Color

#f51814

#f51814
hex#f51814
rgbrgb(245, 24, 20)
hslhsl(1, 92%, 52%)
oklchoklch(0.615 0.244 28.9)
Closest name: Apple Cherry (#f81404)Relative luminance 0.2012

Colors that go with #f51814

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 →

#14f1f5

#f51481 · #f58814

#14f518 · #1814f5

Split-complementary

Open in tool →

#14f588 · #1481f5

#81f514 · #14f1f5 · #8814f5

Contrast

#f51814 as textRatioAAAA largeAAAFix
Aaon white
4.18:1failpassfail
  • AA: use #eb0e0a as the text (4.57:1)
  • AAA: use #b00a07 as the text (7.26:1)
  • AA: or shift the background to #0f0f0f (4.59:1)
Aaon black
5.02:1passpassfail
  • AAA: use #f86562 as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f51814 as the background.

Brands using this color

Fonts for this mood

#f51814 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f51814
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 #f51814 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f51814-c4a19c-62cb9a-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