Color

#f03524

#f03524
hex#f03524
rgbrgb(240, 53, 36)
hslhsl(5, 87%, 54%)
oklchoklch(0.623 0.224 29.9)
Closest name: Arcade Fire (#ee3311)Relative luminance 0.212

Colors that go with #f03524

Charcoal, Steel Blue and Cadet 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 →

#24dff0

#f02479 · #f09b24

#24f035 · #3524f0

Split-complementary

Open in tool →

#24f09b · #2479f0

#79f024 · #24dff0 · #9b24f0

Contrast

#f03524 as textRatioAAAA largeAAAFix
Aaon white
4.01:1failpassfail
  • AA: use #e52210 as the text (4.6:1)
  • AAA: use #b01a0c as the text (7:1)
  • AA: or shift the background to #141414 (4.6:1)
Aaon black
5.24:1passpassfail
  • AAA: use #f4695d 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 #f03524 as the background.

Brands using this color

Fonts for this mood

#f03524 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f03524
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 #f03524 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f03524-c4a49c-62cba1-2d261f-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