Color

#b33d3f

#b33d3f
hex#b33d3f
rgbrgb(179, 61, 63)
hslhsl(359, 49%, 47%)
oklchoklch(0.529 0.153 23.1)
Closest name: Barbarossa (#a84734)Relative luminance 0.1328

Colors that go with #b33d3f

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3db3b1

#b33d7a · #b3763d

#3fb33d · #3d3fb3

Split-complementary

Open in tool →

#3db376 · #3d7ab3

#7ab33d · #3db3b1 · #763db3

Contrast

#b33d3f as textRatioAAAA largeAAAFix
Aaon white
5.74:1passpassfail
  • AAA: use #9c3537 as the text (7.05:1)
Aaon black
3.66:1failpassfail
  • AA: use #c35052 as the text (4.59:1)
  • AAA: use #d37e7f as the text (7.06:1)
  • AA: or shift the background to #e6e6e6 (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 #b33d3f 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

#b33d3f reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b33d3f
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 #b33d3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b33d3f-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