Color

#3605fa

#3605fa
hex#3605fa
rgbrgb(54, 5, 250)
hslhsl(252, 96%, 50%)
oklchoklch(0.463 0.297 271.6)
Closest name: Overdue Blue (#4400ff)Relative luminance 0.0779

Colors that go with #3605fa

Charcoal, Cobalt Blue and Crimson 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 →

#c9fa05

#054ffa · #b005fa

#fa3605 · #05fa36

Split-complementary

Open in tool →

#fab005 · #4ffa05

#fa054f · #c9fa05 · #05fab0

Contrast

#3605fa as textRatioAAAA largeAAAFix
Aaon white
8.21:1passpasspassPasses AAA — no fix needed.
Aaon black
2.56:1failfailfail
  • AA: use #7a5afc as the text (4.7:1)
  • AAA: use #9f87fd as the text (7.36:1)
  • AA: or shift the background to #c2c2c2 (4.61:1)
  • AAA: or shift the background to #ededed (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3605fa as the background.

Brands using this color

Fonts for this mood

#3605fa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3605fa
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 #3605fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3605fa-a99cc4-dfb64e-281f2d-e9ecf1?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