Color

#c31351

#c31351
hex#c31351
rgbrgb(195, 19, 81)
hslhsl(339, 82%, 42%)
oklchoklch(0.528 0.203 9.6)
Closest name: Akari Red (#c90b42)Relative luminance 0.1266

Colors that go with #c31351

Steel Blue, Teal 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 →

#13c385

#c313a9 · #c32e13

#51c313 · #1351c3

Split-complementary

Open in tool →

#13c32e · #13a9c3

#a9c313 · #13c385 · #2e13c3

Contrast

#c31351 as textRatioAAAA largeAAAFix
Aaon white
5.94:1passpassfail
  • AAA: use #ac1147 as the text (7.18:1)
Aaon black
3.53:1failpassfail
  • AA: use #e3165e as the text (4.54:1)
  • AAA: use #f06696 as the text (7.05:1)
  • AA: or shift the background to #e0e0e0 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #c31351 as the background.

Brands using this color

Fonts for this mood

#c31351 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c31351
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 #c31351 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c31351-c49ca5-62cb74-2d211f-f1e9f0?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