Color

#668da9

#668da9
hex#668da9
rgbrgb(102, 141, 169)
hslhsl(205, 28%, 53%)
oklchoklch(0.625 0.061 240.2)
Closest name: lightslategray (#778899)Relative luminance 0.2474

Colors that go with #668da9

Charcoal, Copper and Cobalt Blue 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 →

#a98266

#66a9a3 · #666ba9

#a9668d · #8da966

Split-complementary

Open in tool →

#a9666b · #a9a366

#a366a9 · #a98266 · #6ba966

Contrast

#668da9 as textRatioAAAA largeAAAFix
Aaon white
3.53:1failpassfail
  • AA: use #547b96 as the text (4.52:1)
  • AAA: use #3e5b6f as the text (7.17:1)
  • AA: or shift the background to #212121 (4.56:1)
Aaon black
5.95:1passpassfail
  • AAA: use #799bb4 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #668da9 as the background.

Brands using this color

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

Palettes built around it

mcpConnect your agent — build around #668da9
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 #668da9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668da9-9cafc4-df4e58-1f212d-e9f1f0?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