Color

#3756be

#3756be
hex#3756be
rgbrgb(55, 86, 190)
hslhsl(226, 55%, 48%)
oklchoklch(0.491 0.167 267.3)
Closest name: Denim (#1560bd)Relative luminance 0.1119

Colors that go with #3756be

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 →

#be9e37

#379abe · #5b37be

#be3756 · #56be37

Split-complementary

Open in tool →

#be5b37 · #9abe37

#be379a · #be9e37 · #37be5b

Contrast

#3756be as textRatioAAAA largeAAAFix
Aaon white
6.49:1passpassfail
  • AAA: use #3451b2 as the text (7.08:1)
Aaon black
3.24:1failpassfail
  • AA: use #5571ce as the text (4.64:1)
  • AAA: use #8195da as the text (7.24:1)
  • AA: or shift the background to #d9d9d9 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3756be as the background.

Brands using this color

Fonts for this mood

#3756be reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3756be
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 #3756be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3756be-9ca1c4-df774e-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