Color

#b42233

#b42233
hex#b42233
rgbrgb(180, 34, 51)
hslhsl(353, 68%, 42%)
oklchoklch(0.503 0.18 21.2)
Closest name: Active Volcano (#bb1133)Relative luminance 0.1109

Colors that go with #b42233

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#22b4a3

#b4227c · #b45a22

#33b422 · #2233b4

Split-complementary

Open in tool →

#22b45a · #227cb4

#7cb422 · #22b4a3 · #5a22b4

Contrast

#b42233 as textRatioAAAA largeAAAFix
Aaon white
6.53:1passpassfail
  • AAA: use #ab2131 as the text (7.02:1)
Aaon black
3.22:1failpassfail
  • AA: use #d93649 as the text (4.57:1)
  • AAA: use #e4727f as the text (7.01:1)
  • AA: or shift the background to #d9d9d9 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b42233 as the background.

Brands using this color

Fonts for this mood

#b42233 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b42233
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 #b42233 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b42233-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