Color

#c41728

#c41728
hex#c41728
rgbrgb(196, 23, 40)
hslhsl(354, 79%, 43%)
oklchoklch(0.525 0.202 24.3)
Closest name: Blood Kiss (#c30b0a)Relative luminance 0.125

Colors that go with #c41728

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 →

#17c4b3

#c4177f · #c45c17

#28c417 · #1728c4

Split-complementary

Open in tool →

#17c45c · #177fc4

#7fc417 · #17c4b3 · #5c17c4

Contrast

#c41728 as textRatioAAAA largeAAAFix
Aaon white
6:1passpassfail
  • AAA: use #ad1424 as the text (7.24:1)
Aaon black
3.5:1failpassfail
  • AA: use #e51f33 as the text (4.58:1)
  • AAA: use #ee6d7a as the text (7.1:1)
  • AA: or shift the background to #e0e0e0 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #c41728 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#c41728 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c41728
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 #c41728 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c41728-c49d9c-62cb8e-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