Color

#3c008a

#3c008a
hex#3c008a
rgbrgb(60, 0, 138)
hslhsl(266, 100%, 27%)
oklchoklch(0.329 0.186 290.3)
Closest name: Indigo Static (#4b0183)Relative luminance 0.028

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e8a00

#00098a · #81008a

#8a3c00 · #008a3c

Split-complementary

Open in tool →

#8a8100 · #098a00

#8a0009 · #4e8a00 · #008a81

Contrast

#3c008a as textRatioAAAA largeAAAFix
Aaon white
13.47:1passpasspassPasses AAA — no fix needed.
Aaon black
1.56:1failfailfail
  • AA: use #9747ff as the text (4.66:1)
  • AAA: use #b47aff as the text (7.17:1)
  • AA: or shift the background to #969696 (4.55:1)
  • AAA: or shift the background to #bdbdbd (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3c008a 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

#3c008a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3c008a
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 #3c008a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3c008a-b29cc4-dfd74e-2b1f2d-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