Color

#cf0c23

#cf0c23
hex#cf0c23
rgbrgb(207, 12, 35)
hslhsl(353, 89%, 43%)
oklchoklch(0.541 0.215 25.2)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1365

Colors that go with #cf0c23

Charcoal, Royal 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 →

#0ccfb8

#cf0c84 · #cf570c

#23cf0c · #0c23cf

Split-complementary

Open in tool →

#0ccf57 · #0c84cf

#84cf0c · #0ccfb8 · #570ccf

Contrast

#cf0c23 as textRatioAAAA largeAAAFix
Aaon white
5.63:1passpassfail
  • AAA: use #b20a1e as the text (7.11:1)
Aaon black
3.73:1failpassfail
  • AA: use #ec0e28 as the text (4.66:1)
  • AAA: use #f66576 as the text (7.04:1)
  • AA: or shift the background to #e6e6e6 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #cf0c23 as the background.

Brands using this color

Fonts for this mood

#cf0c23 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #cf0c23
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 #cf0c23 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/cf0c23-c49c9c-62cb8c-2d241f-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