Color

#668393

#668393
hex#668393
rgbrgb(102, 131, 147)
hslhsl(201, 18%, 49%)
oklchoklch(0.593 0.041 232.5)
Closest name: Citadel (#6a7f8b)Relative luminance 0.2116

Colors that go with #668393

Charcoal, Copper and Blush Pink 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 →

#937666

#66938d · #666d93

#936684 · #849366

Split-complementary

Open in tool →

#93666d · #938d66

#8d6693 · #937666 · #6d9366

Contrast

#668393 as textRatioAAAA largeAAAFix
Aaon white
4.01:1failpassfail
  • AA: use #5e7987 as the text (4.6:1)
  • AAA: use #475b66 as the text (7.1:1)
  • AA: or shift the background to #141414 (4.59:1)
Aaon black
5.23:1passpassfail
  • AAA: use #819aa7 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #668393 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 #668393
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 #668393 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668393-9cb1c4-df4e62-1f222d-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