Color

Active Volcano

#bb1133
hex#bb1133
rgbrgb(187, 17, 51)
hslhsl(348, 83%, 40%)
oklchoklch(0.507 0.196 19.7)
Relative luminance 0.112

Tints & shades

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

Harmonies

Complementary

Open in tool →

#11bb99

#bb1188 · #bb4411

#33bb11 · #1133bb

Split-complementary

Open in tool →

#11bb44 · #1188bb

#88bb11 · #11bb99 · #4411bb

Contrast

Active Volcano as textRatioAAAA largeAAAFix
Aaon white
6.48:1passpassfail
  • AAA: use #b11031 as the text (7.03:1)
Aaon black
3.24:1failpassfail
  • AA: use #e5153f as the text (4.51:1)
  • AAA: use #f16a85 as the text (7.14:1)
  • AA: or shift the background to #d9d9d9 (4.59:1)

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

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

mcpConnect your agent — build around Active Volcano
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 #bb1133 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bb1133-c49c9f-62cb83-2d231f-f1e9ef?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