Color

#684fcf

#684fcf
hex#684fcf
rgbrgb(104, 79, 207)
hslhsl(252, 57%, 56%)
oklchoklch(0.525 0.189 287)
Closest name: slateblue (#6a5acd)Relative luminance 0.1304

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b5cf4f

#4f75cf · #a84fcf

#cf684f · #4fcf68

Split-complementary

Open in tool →

#cfa84f · #75cf4f

#cf4f75 · #b5cf4f · #4fcfa8

Contrast

#684fcf as textRatioAAAA largeAAAFix
Aaon white
5.82:1passpassfail
  • AAA: use #573bc9 as the text (7.31:1)
Aaon black
3.61:1failpassfail
  • AA: use #7a63d4 as the text (4.56:1)
  • AAA: use #9c8bdf as the text (7.17:1)
  • AA: or shift the background to #e3e3e3 (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 #684fcf as the background.

Brands using this color

Fonts for this mood

#684fcf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #684fcf
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 #684fcf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/684fcf-a99cc4-dfb64e-281f2d-e9ecf1?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