Color

#668f8d

#668f8d
hex#668f8d
rgbrgb(102, 143, 141)
hslhsl(177, 17%, 48%)
oklchoklch(0.619 0.045 192.3)
Closest name: Arctic (#648589)Relative luminance 0.2439

Colors that go with #668f8d

Charcoal, Copper and Burlywood 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 →

#8f6668

#668f78 · #667c8f

#8d668f · #8f8d66

Split-complementary

Open in tool →

#8f667c · #8f7866

#78668f · #8f6668 · #7c8f66

Contrast

#668f8d as textRatioAAAA largeAAAFix
Aaon white
3.57:1failpassfail
  • AA: use #597d7b as the text (4.52:1)
  • AAA: use #425c5b as the text (7.21:1)
  • AA: or shift the background to #212121 (4.51:1)
Aaon black
5.88:1passpassfail
  • AAA: use #769e9c as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #668f8d 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 #668f8d
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 #668f8d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668f8d-a2bcbe-d4599b-1f282d-e9f1ed?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