Color

#3964fe

#3964fe
hex#3964fe
rgbrgb(57, 100, 254)
hslhsl(227, 99%, 61%)
oklchoklch(0.57 0.233 266.6)
Closest name: Bluerocratic (#1f66ff)Relative luminance 0.1714

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fed339

#39c6fe · #7139fe

#fe3964 · #64fe39

Split-complementary

Open in tool →

#fe7139 · #c6fe39

#fe39c6 · #fed339 · #39fe71

Contrast

#3964fe as textRatioAAAA largeAAAFix
Aaon white
4.74:1passpassfail
Aaon black
4.43:1failpassfail
  • AA: use #3e68fe as the text (4.62:1)
  • AAA: use #7190fe as the text (7.12:1)
  • 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 #3964fe as the background.

Brands using this color

Fonts for this mood

#3964fe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3964fe
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 #3964fe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3964fe-9ca0c4-df7a4e-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