Color

#330b60

#330b60
hex#330b60
rgbrgb(51, 11, 96)
hslhsl(268, 79%, 21%)
oklchoklch(0.279 0.134 297.9)
Closest name: Cotinga Purple (#340059)Relative luminance 0.0179

Tints & shades

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

Harmonies

Complementary

Open in tool →

#38600b

#0b0e60 · #5d0b60

#60330b · #0b6033

Split-complementary

Open in tool →

#605d0b · #0e600b

#600b0e · #38600b · #0b605d

Contrast

#330b60 as textRatioAAAA largeAAAFix
Aaon white
15.47:1passpasspassPasses AAA — no fix needed.
Aaon black
1.36:1failfailfail
  • AA: use #964dea as the text (4.55:1)
  • AAA: use #b47ff0 as the text (7.23:1)
  • AA: or shift the background to #8c8c8c (4.6:1)
  • AAA: or shift the background to #b0b0b0 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #330b60 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

#330b60 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #330b60
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 #330b60 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/330b60-b39cc4-dfdc4e-2c1f2d-e9eaf1?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