Color

#374bfb

#374bfb
hex#374bfb
rgbrgb(55, 75, 251)
hslhsl(234, 96%, 60%)
oklchoklch(0.526 0.257 269.3)
Closest name: Meteor Shower (#5533ff)Relative luminance 0.1281

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fbe737

#37adfb · #8537fb

#fb374b · #4bfb37

Split-complementary

Open in tool →

#fb8537 · #adfb37

#fb37ad · #fbe737 · #37fb85

Contrast

#374bfb as textRatioAAAA largeAAAFix
Aaon white
5.9:1passpassfail
  • AAA: use #1e34fa as the text (7.18:1)
Aaon black
3.56:1failpassfail
  • AA: use #5566fc as the text (4.69:1)
  • AAA: use #828efc as the text (7.22:1)
  • AA: or shift the background to #e3e3e3 (4.59:1)

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

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

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

tool url/palettes/new/374bfb-9d9cc4-df8a4e-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