Color

#3963c6

#3963c6
hex#3963c6
rgbrgb(57, 99, 198)
hslhsl(222, 55%, 50%)
oklchoklch(0.524 0.162 264.3)
Closest name: God of Rain (#4466cc)Relative luminance 0.1387

Colors that go with #3963c6

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 →

#c69c39

#39aac6 · #5539c6

#c63963 · #63c639

Split-complementary

Open in tool →

#c65539 · #aac639

#c639aa · #c69c39 · #39c655

Contrast

#3963c6 as textRatioAAAA largeAAAFix
Aaon white
5.56:1passpassfail
  • AAA: use #3054a6 as the text (7.13:1)
Aaon black
3.77:1failpassfail
  • AA: use #4d73cb as the text (4.63:1)
  • AAA: use #7995d8 as the text (7.1:1)
  • AA: or shift the background to #e8e8e8 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3963c6 as the background.

Brands using this color

Fonts for this mood

#3963c6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3963c6
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 #3963c6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3963c6-9ca3c4-df6e4e-211f2d-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