Color

#bb3a3c

#bb3a3c
hex#bb3a3c
rgbrgb(187, 58, 60)
hslhsl(359, 53%, 48%)
oklchoklch(0.538 0.165 23.8)
Closest name: Bleeding Heart (#c02e4c)Relative luminance 0.1392

Colors that go with #bb3a3c

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.

Real palettes that use #bb3a3c

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#3abbb9

#bb3a7d · #bb783a

#3cbb3a · #3a3cbb

Split-complementary

Open in tool →

#3abb78 · #3a7dbb

#7dbb3a · #3abbb9 · #783abb

Contrast

#bb3a3c as textRatioAAAA largeAAAFix
Aaon white
5.55:1passpassfail
  • AAA: use #a03133 as the text (7.04:1)
Aaon black
3.78:1failpassfail
  • AA: use #c84c4e as the text (4.6:1)
  • AAA: use #d77e80 as the text (7.19:1)
  • AA: or shift the background to #e8e8e8 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #bb3a3c as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#bb3a3c reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #bb3a3c
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 #bb3a3c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bb3a3c-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