Color

#c4121e

#c4121e
hex#c4121e
rgbrgb(196, 18, 30)
hslhsl(356, 83%, 42%)
oklchoklch(0.522 0.205 26.3)
Closest name: Blood Kiss (#c30b0a)Relative luminance 0.1226

Colors that go with #c4121e

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 →

#12c4b8

#c41277 · #c45f12

#1ec412 · #121ec4

Split-complementary

Open in tool →

#12c45f · #1277c4

#77c412 · #12c4b8 · #5f12c4

Contrast

#c4121e as textRatioAAAA largeAAAFix
Aaon white
6.08:1passpassfail
  • AAA: use #b1101b as the text (7.1:1)
Aaon black
3.45:1failpassfail
  • AA: use #e91624 as the text (4.6:1)
  • AAA: use #f16a73 as the text (7.05:1)
  • AA: or shift the background to #dedede (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 #c4121e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#c4121e reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c4121e
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 #c4121e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c4121e-c49e9c-62cb91-2d241f-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