Color

#cb151e

#cb151e
hex#cb151e
rgbrgb(203, 21, 30)
hslhsl(357, 81%, 44%)
oklchoklch(0.536 0.209 26.7)
Closest name: Blood Kiss (#c30b0a)Relative luminance 0.1333

Colors that go with #cb151e

Royal Blue, Teal and Amber 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 →

#15cbc2

#cb1579 · #cb6715

#1ecb15 · #151ecb

Split-complementary

Open in tool →

#15cb67 · #1579cb

#79cb15 · #15cbc2 · #6715cb

Contrast

#cb151e as textRatioAAAA largeAAAFix
Aaon white
5.73:1passpassfail
  • AAA: use #af121a as the text (7.18:1)
Aaon black
3.67:1failpassfail
  • AA: use #e71823 as the text (4.55:1)
  • AAA: use #ef6b72 as the text (7.02:1)
  • AA: or shift the background to #e6e6e6 (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 #cb151e as the background.

Brands using this color

Fonts for this mood

#cb151e reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #cb151e
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 #cb151e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/cb151e-c49f9c-62cb93-2d251f-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