Color

#f50531

#f50531
hex#f50531
rgbrgb(245, 5, 49)
hslhsl(349, 96%, 49%)
oklchoklch(0.613 0.246 23.7)
Closest name: Barberry (#ee1133)Relative luminance 0.1974

Colors that go with #f50531

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 →

#05f5c9

#f505a9 · #f55105

#31f505 · #0531f5

Split-complementary

Open in tool →

#05f551 · #05a9f5

#a9f505 · #05f5c9 · #5105f5

Contrast

#f50531 as textRatioAAAA largeAAAFix
Aaon white
4.24:1failpassfail
  • AA: use #eb052f as the text (4.57:1)
  • AAA: use #b40424 as the text (7.04:1)
  • AA: or shift the background to #0f0f0f (4.52:1)
Aaon black
4.95:1passpassfail
  • AAA: use #fc5f7c as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f50531 as the background.

Brands using this color

Fonts for this mood

#f50531 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f50531
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 #f50531 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f50531-c49c9f-62cb85-2d231f-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