Color

#685fdd

#685fdd
hex#685fdd
rgbrgb(104, 95, 221)
hslhsl(244, 65%, 62%)
oklchoklch(0.562 0.186 281.8)
Closest name: slateblue (#6a5acd)Relative luminance 0.1635

Colors that go with #685fdd

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 →

#d5dd5f

#5f96dd · #a65fdd

#dd685f · #5fdd68

Split-complementary

Open in tool →

#dda65f · #96dd5f

#dd5f96 · #d5dd5f · #5fdda6

Contrast

#685fdd as textRatioAAAA largeAAAFix
Aaon white
4.92:1passpassfail
  • AAA: use #483dd6 as the text (7.21:1)
Aaon black
4.27:1failpassfail
  • AA: use #6f68df as the text (4.72:1)
  • AAA: use #938de7 as the text (7.2:1)
  • AA: or shift the background to #f5f5f5 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #685fdd as the background.

Brands using this color

Fonts for this mood

#685fdd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #685fdd
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 #685fdd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/685fdd-a39cc4-dfa24e-261f2d-e9edf1?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