Color

#c61518

#c61518
hex#c61518
rgbrgb(198, 21, 24)
hslhsl(359, 81%, 43%)
oklchoklch(0.526 0.206 27.7)
Closest name: Blood Kiss (#c30b0a)Relative luminance 0.1261

Colors that go with #c61518

Royal Blue, Steel Blue and Teal 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 →

#15c6c4

#c61571 · #c66b15

#18c615 · #1518c6

Split-complementary

Open in tool →

#15c66b · #1571c6

#71c615 · #15c6c4 · #6b15c6

Contrast

#c61518 as textRatioAAAA largeAAAFix
Aaon white
5.96:1passpassfail
  • AAA: use #af1215 as the text (7.19:1)
Aaon black
3.52:1failpassfail
  • AA: use #e7181c as the text (4.55:1)
  • AAA: use #f07072 as the text (7.27:1)
  • AA: or shift the background to #e0e0e0 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #c61518 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#c61518 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c61518
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 #c61518 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c61518-c4a09c-62cb96-2d251f-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