Color

#3765ae

#3765ae
hex#3765ae
rgbrgb(55, 101, 174)
hslhsl(217, 52%, 45%)
oklchoklch(0.511 0.127 259.3)
Closest name: Denim (#1560bd)Relative luminance 0.1318

Colors that go with #3765ae

Charcoal, Sea Green and Sienna 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 →

#ae8137

#37a0ae · #4537ae

#ae3765 · #65ae37

Split-complementary

Open in tool →

#ae4537 · #a0ae37

#ae37a0 · #ae8137 · #37ae45

Contrast

#3765ae as textRatioAAAA largeAAAFix
Aaon white
5.78:1passpassfail
  • AAA: use #305797 as the text (7.15:1)
Aaon black
3.64:1failpassfail
  • AA: use #4576c4 as the text (4.64:1)
  • AAA: use #7398d3 as the text (7.16:1)
  • AA: or shift the background to #e3e3e3 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3765ae as the background.

Brands using this color

Fonts for this mood

#3765ae reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3765ae
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 #3765ae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3765ae-9ca7c4-df624e-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