Color

#b33409

#b33409
hex#b33409
rgbrgb(179, 52, 9)
hslhsl(15, 90%, 37%)
oklchoklch(0.513 0.17 36.1)
Closest name: Bloodshed (#ba271a)Relative luminance 0.1206

Colors that go with #b33409

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 #b33409

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0989b3

#b30934 · #b38909

#09b334 · #3409b3

Split-complementary

Open in tool →

#09b389 · #0934b3

#34b309 · #0989b3 · #8909b3

Contrast

#b33409 as textRatioAAAA largeAAAFix
Aaon white
6.15:1passpassfail
  • AAA: use #a02e08 as the text (7.27:1)
Aaon black
3.41:1failpassfail
  • AA: use #d53e0b as the text (4.52:1)
  • AAA: use #f56b3d as the text (7.05:1)
  • AA: or shift the background to #dedede (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b33409 as the background.

Brands using this color

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

Fonts for this mood

#b33409 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b33409
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 #b33409 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b33409-c4ab9c-62cbb2-2d291f-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