Color

#3401cb

#3401cb
hex#3401cb
rgbrgb(52, 1, 203)
hslhsl(255, 99%, 40%)
oklchoklch(0.402 0.252 274.9)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0506

Colors that go with #3401cb

Charcoal, Cobalt Blue and Cornflower Blue 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 →

#98cb01

#0134cb · #9801cb

#cb3401 · #01cb34

Split-complementary

Open in tool →

#cb9801 · #34cb01

#cb0134 · #98cb01 · #01cb98

Contrast

#3401cb as textRatioAAAA largeAAAFix
Aaon white
10.43:1passpasspassPasses AAA — no fix needed.
Aaon black
2.01:1failfailfail
  • AA: use #7d52fe as the text (4.51:1)
  • AAA: use #a080fe as the text (7.01:1)
  • AA: or shift the background to #ababab (4.54:1)
  • AAA: or shift the background to #d4d4d4 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3401cb 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

#3401cb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3401cb
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 #3401cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3401cb-ab9cc4-dfbd4e-291f2d-e9ebf1?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