Color

#4e66ef

#4e66ef
hex#4e66ef
rgbrgb(78, 102, 239)
hslhsl(231, 83%, 62%)
oklchoklch(0.571 0.207 270.8)
Closest name: Bluetiful (#3c69e7)Relative luminance 0.1735

Tints & shades

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

Harmonies

Complementary

Open in tool →

#efd64e

#4eb6ef · #864eef

#ef4e66 · #66ef4e

Split-complementary

Open in tool →

#ef864e · #b6ef4e

#ef4eb6 · #efd64e · #4eef86

Contrast

#4e66ef as textRatioAAAA largeAAAFix
Aaon white
4.7:1passpassfail
  • AAA: use #1f3dea as the text (7.21:1)
Aaon black
4.47:1failpassfail
  • AA: use #526aef as the text (4.67:1)
  • AAA: use #7c8ef3 as the text (7.02:1)
  • AA: or shift the background to #fafafa (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4e66ef as the background.

Brands using this color

Fonts for this mood

#4e66ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4e66ef
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 #4e66ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4e66ef-9c9ec4-df834e-231f2d-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