Color

#b63539

#b63539
hex#b63539
rgbrgb(182, 53, 57)
hslhsl(358, 55%, 46%)
oklchoklch(0.524 0.165 23.3)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1279

Colors that go with #b63539

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 #b63539

Tints & shades

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

Harmonies

Complementary

Open in tool →

#35b6b2

#b6357a · #b67135

#39b635 · #3539b6

Split-complementary

Open in tool →

#35b671 · #357ab6

#7ab635 · #35b6b2 · #7135b6

Contrast

#b63539 as textRatioAAAA largeAAAFix
Aaon white
5.9:1passpassfail
  • AAA: use #a22f33 as the text (7.02:1)
Aaon black
3.56:1failpassfail
  • AA: use #ca494d as the text (4.57:1)
  • AAA: use #d97d80 as the text (7.2:1)
  • 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 #b63539 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#b63539 reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b63539
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 #b63539 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b63539-c49f9c-62cb95-2d251f-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