Color

#3759ae

#3759ae
hex#3759ae
rgbrgb(55, 89, 174)
hslhsl(223, 52%, 45%)
oklchoklch(0.485 0.141 265.1)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1101

Colors that go with #3759ae

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 →

#ae8d37

#3795ae · #5137ae

#ae3759 · #59ae37

Split-complementary

Open in tool →

#ae5137 · #95ae37

#ae3795 · #ae8d37 · #37ae51

Contrast

#3759ae as textRatioAAAA largeAAAFix
Aaon white
6.56:1passpassfail
  • AAA: use #3353a3 as the text (7.22:1)
Aaon black
3.2:1failpassfail
  • AA: use #5172c8 as the text (4.59:1)
  • AAA: use #7b95d5 as the text (7.1:1)
  • AA: or shift the background to #d6d6d6 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3759ae 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

#3759ae reads as cool, modern. The font library is tagged with the same vocabulary:

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

tool url/palettes/new/3759ae-9ca3c4-df704e-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