Color

#b33d3d

#b33d3d
hex#b33d3d
rgbrgb(179, 61, 61)
hslhsl(0, 49%, 47%)
oklchoklch(0.528 0.154 24)
Closest name: Barbarossa (#a84734)Relative luminance 0.1326

Colors that go with #b33d3d

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 →

#3db3b3

#b33d78 · #b3783d

#3db33d · #3d3db3

Split-complementary

Open in tool →

#3db378 · #3d78b3

#78b33d · #3db3b3 · #783db3

Contrast

#b33d3d as textRatioAAAA largeAAAFix
Aaon white
5.75:1passpassfail
  • AAA: use #9c3535 as the text (7.06:1)
Aaon black
3.65:1failpassfail
  • AA: use #c35050 as the text (4.58:1)
  • AAA: use #d37e7e as the text (7.06:1)
  • AA: or shift the background to #e6e6e6 (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 #b33d3d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b33d3d reads as warm. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b33d3d
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 #b33d3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b33d3d-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