Color

#3774be

#3774be
hex#3774be
rgbrgb(55, 116, 190)
hslhsl(213, 55%, 48%)
oklchoklch(0.555 0.132 254.8)
Closest name: Campanula (#3473b7)Relative luminance 0.1702

Colors that go with #3774be

Charcoal, Crimson and Sea Green 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 →

#be8137

#37b7be · #3e37be

#be3774 · #74be37

Split-complementary

Open in tool →

#be3e37 · #b7be37

#be37b7 · #be8137 · #37be3e

Contrast

#3774be as textRatioAAAA largeAAAFix
Aaon white
4.77:1passpassfail
  • AAA: use #2a5992 as the text (7.14:1)
Aaon black
4.4:1failpassfail
  • AA: use #3876c2 as the text (4.54:1)
  • AAA: use #6999d3 as the text (7.1:1)
  • AA: or shift the background to #fafafa (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3774be as the background.

Brands using this color

Fonts for this mood

#3774be reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3774be
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 #3774be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3774be-9ca9c4-df584e-1f202d-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