Color

#374efb

#374efb
hex#374efb
rgbrgb(55, 78, 251)
hslhsl(233, 96%, 60%)
oklchoklch(0.53 0.254 269)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1323

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbe437

#37b0fb · #8237fb

#fb374e · #4efb37

Split-complementary

Open in tool →

#fb8237 · #b0fb37

#fb37b0 · #fbe437 · #37fb82

Contrast

#374efb as textRatioAAAA largeAAAFix
Aaon white
5.76:1passpassfail
  • AAA: use #1933fa as the text (7.25:1)
Aaon black
3.65:1failpassfail
  • AA: use #5064fb as the text (4.56:1)
  • AAA: use #7d8cfc as the text (7.03:1)
  • AA: or shift the background to #e6e6e6 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #374efb 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

#374efb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #374efb
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 #374efb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/374efb-9c9cc4-df884e-241f2d-e9eef1?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