Color

#3969ac

#3969ac
hex#3969ac
rgbrgb(57, 105, 172)
hslhsl(215, 50%, 45%)
oklchoklch(0.52 0.119 257.1)
Closest name: Campanula (#3473b7)Relative luminance 0.1395

Colors that go with #3969ac

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 →

#ac7c39

#39a3ac · #4339ac

#ac3969 · #69ac39

Split-complementary

Open in tool →

#ac4339 · #a3ac39

#ac39a3 · #ac7c39 · #39ac43

Contrast

#3969ac as textRatioAAAA largeAAAFix
Aaon white
5.54:1passpassfail
  • AAA: use #305991 as the text (7.09:1)
Aaon black
3.79:1failpassfail
  • AA: use #4075bf as the text (4.51:1)
  • AAA: use #7199d0 as the text (7.17:1)
  • AA: or shift the background to #e8e8e8 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3969ac as the background.

Brands using this color

Fonts for this mood

#3969ac reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3969ac
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 #3969ac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3969ac-9ca8c4-df5d4e-201f2d-e9f0f1?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