Color

#685ed9

#685ed9
hex#685ed9
rgbrgb(104, 94, 217)
hslhsl(245, 62%, 61%)
oklchoklch(0.557 0.182 282.4)
Closest name: slateblue (#6a5acd)Relative luminance 0.1596

Colors that go with #685ed9

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 →

#cfd95e

#5e91d9 · #a65ed9

#d9685e · #5ed968

Split-complementary

Open in tool →

#d9a65e · #91d95e

#d95e91 · #cfd95e · #5ed9a6

Contrast

#685ed9 as textRatioAAAA largeAAAFix
Aaon white
5.01:1passpassfail
  • AAA: use #493dd1 as the text (7.31:1)
Aaon black
4.19:1failpassfail
  • AA: use #7066db as the text (4.61:1)
  • AAA: use #938be4 as the text (7.05:1)
  • AA: or shift the background to #f5f5f5 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #685ed9 as the background.

Brands using this color

Fonts for this mood

#685ed9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #685ed9
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 #685ed9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/685ed9-a49cc4-dfa54e-261f2d-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