Color

#685ad3

#685ad3
hex#685ad3
rgbrgb(104, 90, 211)
hslhsl(247, 58%, 59%)
oklchoklch(0.546 0.179 284)
Closest name: slateblue (#6a5acd)Relative luminance 0.1496

Colors that go with #685ad3

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 →

#c5d35a

#5a88d3 · #a55ad3

#d3685a · #5ad368

Split-complementary

Open in tool →

#d3a55a · #88d35a

#d35a88 · #c5d35a · #5ad3a5

Contrast

#685ad3 as textRatioAAAA largeAAAFix
Aaon white
5.26:1passpassfail
  • AAA: use #4e3ecc as the text (7.28:1)
Aaon black
3.99:1failpassfail
  • AA: use #7366d6 as the text (4.6:1)
  • AAA: use #988ee1 as the text (7.29:1)
  • AA: or shift the background to #f0f0f0 (4.62:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #685ad3 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#685ad3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #685ad3
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 #685ad3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/685ad3-a59cc4-dfaa4e-271f2d-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