Color

#686fb1

#686fb1
hex#686fb1
rgbrgb(104, 111, 177)
hslhsl(234, 32%, 55%)
oklchoklch(0.565 0.102 278)
Closest name: Loch Ness (#5f6db0)Relative luminance 0.1749

Colors that go with #686fb1

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 →

#b1aa68

#6894b1 · #8568b1

#b1686f · #6fb168

Split-complementary

Open in tool →

#b18568 · #94b168

#b16894 · #b1aa68 · #68b185

Contrast

#686fb1 as textRatioAAAA largeAAAFix
Aaon white
4.67:1passpassfail
  • AAA: use #4c5394 as the text (7.07:1)
Aaon black
4.5:1failpassfail
  • AA: use #6b72b3 as the text (4.68:1)
  • AAA: use #8d92c4 as the text (7.04:1)
  • AA: or shift the background to #fcfcfc (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #686fb1 as the background.

Brands using this color

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

mcpConnect your agent — build around #686fb1
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 #686fb1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/686fb1-9d9cc4-df8a4e-241f2d-e9eef1?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