Color

#f63131

#f63131
hex#f63131
rgbrgb(246, 49, 49)
hslhsl(0, 92%, 58%)
oklchoklch(0.632 0.23 27)
Closest name: Apple Cherry (#f81404)Relative luminance 0.2201

Colors that go with #f63131

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 →

#31f6f6

#f63194 · #f69431

#31f631 · #3131f6

Split-complementary

Open in tool →

#31f694 · #3194f6

#94f631 · #31f6f6 · #9431f6

Contrast

#f63131 as textRatioAAAA largeAAAFix
Aaon white
3.89:1failpassfail
  • AA: use #eb0a0a as the text (4.58:1)
  • AAA: use #b00707 as the text (7.29:1)
  • AA: or shift the background to #171717 (4.61:1)
Aaon black
5.4:1passpassfail
  • AAA: use #f96767 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f63131 as the background.

Brands using this color

Fonts for this mood

#f63131 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #f63131
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 #f63131 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f63131-c4a19c-62cb98-2d251f-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