Color

#3934cb

#3934cb
hex#3934cb
rgbrgb(57, 52, 203)
hslhsl(242, 59%, 50%)
oklchoklch(0.446 0.222 274.1)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0764

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c6cb34

#347acb · #8534cb

#cb3934 · #34cb39

Split-complementary

Open in tool →

#cb8534 · #7acb34

#cb347a · #c6cb34 · #34cb85

Contrast

#3934cb as textRatioAAAA largeAAAFix
Aaon white
8.31:1passpasspassPasses AAA — no fix needed.
Aaon black
2.53:1failfailfail
  • AA: use #6d69d8 as the text (4.66:1)
  • AAA: use #908de2 as the text (7.09:1)
  • AA: or shift the background to #bfbfbf (4.52:1)
  • AAA: or shift the background to #ededed (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3934cb 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

#3934cb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3934cb
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 #3934cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3934cb-a29cc4-df9e4e-261f2d-e9edf1?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