Color

#3759d2

#3759d2
hex#3759d2
rgbrgb(55, 89, 210)
hslhsl(227, 63%, 52%)
oklchoklch(0.513 0.19 267.3)
Closest name: God of Rain (#4466cc)Relative luminance 0.1261

Colors that go with #3759d2

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 →

#d2b037

#37a6d2 · #6337d2

#d23759 · #59d237

Split-complementary

Open in tool →

#d26337 · #a6d237

#d237a6 · #d2b037 · #37d263

Contrast

#3759d2 as textRatioAAAA largeAAAFix
Aaon white
5.96:1passpassfail
  • AAA: use #2c4dc3 as the text (7.1:1)
Aaon black
3.52:1failpassfail
  • AA: use #506ed7 as the text (4.55:1)
  • AAA: use #7e94e2 as the text (7.22:1)
  • AA: or shift the background to #e0e0e0 (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 #3759d2 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

#3759d2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3759d2
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 #3759d2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3759d2-9ca0c4-df7a4e-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