Color

#3b3bfc

#3b3bfc
hex#3b3bfc
rgbrgb(59, 59, 252)
hslhsl(240, 97%, 61%)
oklchoklch(0.507 0.272 271.3)
Closest name: Meteor Shower (#5533ff)Relative luminance 0.1109

Colors that go with #3b3bfc

Charcoal, Sea Green and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fcfc3b

#3b9cfc · #9c3bfc

#fc3b3b · #3bfc3b

Split-complementary

Open in tool →

#fc9c3b · #9cfc3b

#fc3b9c · #fcfc3b · #3bfc9c

Contrast

#3b3bfc as textRatioAAAA largeAAAFix
Aaon white
6.53:1passpassfail
  • AAA: use #3131fc as the text (7.06:1)
Aaon black
3.22:1failpassfail
  • AA: use #6363fd as the text (4.73:1)
  • AAA: use #8b8bfd as the text (7.21:1)
  • AA: or shift the background to #d9d9d9 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b3bfc as the background.

Brands using this color

Fonts for this mood

#3b3bfc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b3bfc
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

›analyze #3b3bfc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b3bfc-a19cc4-df994e-251f2d-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