Color

#c31913

#c31913
hex#c31913
rgbrgb(195, 25, 19)
hslhsl(2, 82%, 42%)
oklchoklch(0.522 0.202 28.9)
Closest name: Blood Kiss (#c30b0a)Relative luminance 0.1234

Colors that go with #c31913

Charcoal, Royal Blue and Sea Green 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 →

#13bdc3

#c31365 · #c37113

#13c319 · #1913c3

Split-complementary

Open in tool →

#13c371 · #1365c3

#65c313 · #13bdc3 · #7113c3

Contrast

#c31913 as textRatioAAAA largeAAAFix
Aaon white
6.05:1passpassfail
  • AAA: use #b01711 as the text (7.05:1)
Aaon black
3.47:1failpassfail
  • AA: use #e81e17 as the text (4.63:1)
  • AAA: use #f06f6a as the text (7.19:1)
  • AA: or shift the background to #e0e0e0 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #c31913 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#c31913 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c31913
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 #c31913 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c31913-c4a29c-62cb9c-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