Color

#b54136

#b54136
hex#b54136
rgbrgb(181, 65, 54)
hslhsl(5, 54%, 46%)
oklchoklch(0.535 0.153 28.6)
Closest name: Barbarossa (#a84734)Relative luminance 0.1387

Tints & shades

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

Harmonies

Complementary

Open in tool →

#36aab5

#b5366b · #b58036

#36b541 · #4136b5

Split-complementary

Open in tool →

#36b580 · #366bb5

#6bb536 · #36aab5 · #8036b5

Contrast

#b54136 as textRatioAAAA largeAAAFix
Aaon white
5.56:1passpassfail
  • AAA: use #99372e as the text (7.14:1)
Aaon black
3.77:1failpassfail
  • AA: use #c74e43 as the text (4.6:1)
  • AAA: use #d67e76 as the text (7.11:1)
  • AA: or shift the background to #e8e8e8 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b54136 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b54136 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b54136
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #b54136 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b54136-c4a49c-62cba1-2d261f-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