Color

#b53638

#b53638
hex#b53638
rgbrgb(181, 54, 56)
hslhsl(359, 54%, 46%)
oklchoklch(0.523 0.163 24)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1275

Colors that go with #b53638

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.

Real palettes that use #b53638

Tints & shades

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

Harmonies

Complementary

Open in tool →

#36b5b3

#b53677 · #b57336

#38b536 · #3638b5

Split-complementary

Open in tool →

#36b573 · #3677b5

#77b536 · #36b5b3 · #7336b5

Contrast

#b53638 as textRatioAAAA largeAAAFix
Aaon white
5.92:1passpassfail
  • AAA: use #a13032 as the text (7.04:1)
Aaon black
3.55:1failpassfail
  • AA: use #c94a4c as the text (4.57:1)
  • AAA: use #d87d7f as the text (7.16:1)
  • AA: or shift the background to #e3e3e3 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b53638 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b53638 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b53638
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 #b53638 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b53638-c4a09c-62cb96-2d251f-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