Color

#b23b2e

#b23b2e
hex#b23b2e
rgbrgb(178, 59, 46)
hslhsl(6, 59%, 44%)
oklchoklch(0.522 0.157 29.6)
Closest name: Barbarossa (#a84734)Relative luminance 0.1279

Colors that go with #b23b2e

Royal Blue, Sea Green and Steel Blue 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 #b23b2e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2ea5b2

#b22e63 · #b27d2e

#2eb23b · #3b2eb2

Split-complementary

Open in tool →

#2eb27d · #2e63b2

#63b22e · #2ea5b2 · #7d2eb2

Contrast

#b23b2e as textRatioAAAA largeAAAFix
Aaon white
5.9:1passpassfail
  • AAA: use #9e3529 as the text (7.01:1)
Aaon black
3.56:1failpassfail
  • AA: use #cc4738 as the text (4.53:1)
  • AAA: use #da7c71 as the text (7.1:1)
  • AA: or shift the background to #e3e3e3 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b23b2e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b23b2e reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b23b2e
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 #b23b2e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b23b2e-c4a59c-62cba3-2d271f-f1e9ec?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