Color

#646dce

#646dce
hex#646dce
rgbrgb(100, 109, 206)
hslhsl(235, 52%, 60%)
oklchoklch(0.575 0.148 276.7)
Closest name: Flood (#6677bb)Relative luminance 0.181

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cec564

#64a2ce · #9064ce

#ce646d · #6dce64

Split-complementary

Open in tool →

#ce9064 · #a2ce64

#ce64a2 · #cec564 · #64ce90

Contrast

#646dce as textRatioAAAA largeAAAFix
Aaon white
4.54:1passpassfail
  • AAA: use #3d48c2 as the text (7.23:1)
Aaon black
4.62:1passpassfail
  • AAA: use #8b91da as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #646dce as the background.

Brands using this color

Fonts for this mood

#646dce reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #646dce
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 #646dce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/646dce-9e9cc4-df8d4e-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