Color

#b33900

#b33900
hex#b33900
rgbrgb(179, 57, 0)
hslhsl(19, 100%, 35%)
oklchoklch(0.518 0.167 38.8)
Closest name: Bolognese (#bb4400)Relative luminance 0.1251

Tints & shades

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

Harmonies

Complementary

Open in tool →

#007ab3

#b30021 · #b39200

#00b339 · #3900b3

Split-complementary

Open in tool →

#00b392 · #0021b3

#21b300 · #007ab3 · #9200b3

Contrast

#b33900 as textRatioAAAA largeAAAFix
Aaon white
6:1passpassfail
  • AAA: use #9e3200 as the text (7.22:1)
Aaon black
3.5:1failpassfail
  • AA: use #d64400 as the text (4.69:1)
  • AAA: use #ff621a as the text (7.01:1)
  • AA: or shift the background to #e0e0e0 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b33900 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

#b33900 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b33900
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #b33900 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b33900-c4ad9c-62cbb9-2d2a1f-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