Color

#3965ea

#3965ea
hex#3965ea
rgbrgb(57, 101, 234)
hslhsl(225, 81%, 57%)
oklchoklch(0.556 0.207 265.9)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1612

Colors that go with #3965ea

Charcoal, Crimson 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 →

#eabe39

#39beea · #6539ea

#ea3965 · #65ea39

Split-complementary

Open in tool →

#ea6539 · #beea39

#ea39be · #eabe39 · #39ea65

Contrast

#3965ea as textRatioAAAA largeAAAFix
Aaon white
4.97:1passpassfail
  • AAA: use #1747d9 as the text (7.14:1)
Aaon black
4.22:1failpassfail
  • AA: use #426ceb as the text (4.58:1)
  • AAA: use #7594f0 as the text (7.25:1)
  • AA: or shift the background to #f5f5f5 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3965ea as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3965ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3965ea
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 #3965ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3965ea-9ca1c4-df754e-221f2d-e9eff1?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