Color

#684cc2

#684cc2
hex#684cc2
rgbrgb(104, 76, 194)
hslhsl(254, 49%, 53%)
oklchoklch(0.51 0.176 289.6)
Closest name: slateblue (#6a5acd)Relative luminance 0.1201

Colors that go with #684cc2

Charcoal, Sea Green and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a6c24c

#4c6cc2 · #a34cc2

#c2684c · #4cc268

Split-complementary

Open in tool →

#c2a34c · #6cc24c

#c24c6c · #a6c24c · #4cc2a3

Contrast

#684cc2 as textRatioAAAA largeAAAFix
Aaon white
6.17:1passpassfail
  • AAA: use #5e41be as the text (7.06:1)
Aaon black
3.4:1failpassfail
  • AA: use #7e67cb as the text (4.69:1)
  • AAA: use #9f8dd8 as the text (7.28:1)
  • AA: or shift the background to #dedede (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 #684cc2 as the background.

Brands using this color

Fonts for this mood

#684cc2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #684cc2
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #684cc2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/684cc2-aa9cc4-dfbb4e-291f2d-e9ebf1?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