Color

#3b74bf

#3b74bf
hex#3b74bf
rgbrgb(59, 116, 191)
hslhsl(214, 53%, 49%)
oklchoklch(0.557 0.132 256.2)
Closest name: Campanula (#3473b7)Relative luminance 0.1718

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#bf863b

#3bb6bf · #443bbf

#bf3b74 · #74bf3b

Split-complementary

Open in tool →

#bf443b · #b6bf3b

#bf3bb6 · #bf863b · #3bbf44

Contrast

#3b74bf as textRatioAAAA largeAAAFix
Aaon white
4.73:1passpassfail
  • AAA: use #2c5890 as the text (7.23:1)
Aaon black
4.44:1failpassfail
  • AA: use #3c76c3 as the text (4.57:1)
  • AAA: use #6f9ad3 as the text (7.24:1)
  • AA: or shift the background to #fafafa (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b74bf as the background.

Brands using this color

Fonts for this mood

#3b74bf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b74bf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3b74bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b74bf-9ca9c4-df5a4e-1f1f2d-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