Color

#b33e1e

#b33e1e
hex#b33e1e
rgbrgb(179, 62, 30)
hslhsl(13, 71%, 41%)
oklchoklch(0.526 0.158 35.7)
Closest name: Rust (#b7410e)Relative luminance 0.1312

Colors that go with #b33e1e

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 #b33e1e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1e93b3

#b31e48 · #b3891e

#1eb33e · #3e1eb3

Split-complementary

Open in tool →

#1eb389 · #1e48b3

#48b31e · #1e93b3 · #891eb3

Contrast

#b33e1e as textRatioAAAA largeAAAFix
Aaon white
5.79:1passpassfail
  • AAA: use #9d371b as the text (7.01:1)
Aaon black
3.62:1failpassfail
  • AA: use #cd4823 as the text (4.55:1)
  • AAA: use #e37759 as the text (7.05:1)
  • AA: or shift the background to #e3e3e3 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b33e1e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b33e1e reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b33e1e
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 #b33e1e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b33e1e-c4a99c-62cbaf-2d281f-f1e9eb?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