Color

#ff4c42

#ff4c42
hex#ff4c42
rgbrgb(255, 76, 66)
hslhsl(3, 100%, 63%)
oklchoklch(0.671 0.217 27.8)
Closest name: Blood Burst (#ff474c)Relative luminance 0.2682

Colors that go with #ff4c42

Charcoal, Light Sea Green and Amber 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 →

#42f6ff

#ff4297 · #ffaa42

#42ff4c · #4c42ff

Split-complementary

Open in tool →

#42ffaa · #4297ff

#97ff42 · #42f6ff · #aa42ff

Contrast

#ff4c42 as textRatioAAAA largeAAAFix
Aaon white
3.3:1failpassfail
  • AA: use #eb0c00 as the text (4.58:1)
  • AAA: use #b30900 as the text (7.1:1)
  • AA: or shift the background to #262626 (4.59:1)
Aaon black
6.36:1passpassfail
  • AAA: use #ff5f57 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 #ff4c42 as the background.

Brands using this color

Fonts for this mood

#ff4c42 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ff4c42
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 #ff4c42 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ff4c42-c4a39c-62cb9d-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