Color

#b63535

#b63535
hex#b63535
rgbrgb(182, 53, 53)
hslhsl(0, 55%, 46%)
oklchoklch(0.523 0.166 25)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1275

Colors that go with #b63535

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 #b63535

Tints & shades

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

Harmonies

Complementary

Open in tool →

#35b6b6

#b63575 · #b67535

#35b635 · #3535b6

Split-complementary

Open in tool →

#35b675 · #3575b6

#75b635 · #35b6b6 · #7535b6

Contrast

#b63535 as textRatioAAAA largeAAAFix
Aaon white
5.92:1passpassfail
  • AAA: use #a22f2f as the text (7.04:1)
Aaon black
3.55:1failpassfail
  • AA: use #ca4949 as the text (4.56:1)
  • AAA: use #d97d7d as the text (7.18:1)
  • 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 #b63535 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b63535 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b63535
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 #b63535 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b63535-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