Color

#b22a2a

#b22a2a
hex#b22a2a
rgbrgb(178, 42, 42)
hslhsl(0, 62%, 43%)
oklchoklch(0.504 0.173 26)
Closest name: firebrick (#b22222)Relative luminance 0.1129

Colors that go with #b22a2a

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 →

#2ab2b2

#b22a6e · #b26e2a

#2ab22a · #2a2ab2

Split-complementary

Open in tool →

#2ab26e · #2a6eb2

#6eb22a · #2ab2b2 · #6e2ab2

Contrast

#b22a2a as textRatioAAAA largeAAAFix
Aaon white
6.45:1passpassfail
  • AAA: use #a52727 as the text (7.19:1)
Aaon black
3.26:1failpassfail
  • AA: use #d24141 as the text (4.57:1)
  • AAA: use #df7777 as the text (7.04:1)
  • AA: or shift the background to #d9d9d9 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b22a2a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b22a2a reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b22a2a
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 #b22a2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b22a2a-c4a19c-62cb98-2d251f-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