Color

#b22437

#b22437
hex#b22437
rgbrgb(178, 36, 55)
hslhsl(352, 66%, 42%)
oklchoklch(0.501 0.176 19.9)
Closest name: Active Volcano (#bb1133)Relative luminance 0.11

Colors that go with #b22437

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 →

#24b29f

#b2247e · #b25824

#37b224 · #2437b2

Split-complementary

Open in tool →

#24b258 · #247eb2

#7eb224 · #24b29f · #5824b2

Contrast

#b22437 as textRatioAAAA largeAAAFix
Aaon white
6.56:1passpassfail
  • AAA: use #a92335 as the text (7.05:1)
Aaon black
3.2:1failpassfail
  • AA: use #d6384d as the text (4.53:1)
  • AAA: use #e27382 as the text (7.01:1)
  • AA: or shift the background to #d6d6d6 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b22437 as the background.

Brands using this color

Fonts for this mood

#b22437 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b22437
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 #b22437 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b22437-c49c9d-62cb8a-2d231f-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