Color

#688d8d

#688d8d
hex#688d8d
rgbrgb(104, 141, 141)
hslhsl(180, 15%, 48%)
oklchoklch(0.616 0.041 196.1)
Closest name: Arctic (#648589)Relative luminance 0.2392

Colors that go with #688d8d

Charcoal, Copper and Champagne 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 →

#8d6868

#688d7a · #687a8d

#8d688d · #8d8d68

Split-complementary

Open in tool →

#8d687a · #8d7a68

#7a688d · #8d6868 · #7a8d68

Contrast

#688d8d as textRatioAAAA largeAAAFix
Aaon white
3.63:1failpassfail
  • AA: use #5b7b7b as the text (4.6:1)
  • AAA: use #435b5b as the text (7.28:1)
  • AA: or shift the background to #1f1f1f (4.54:1)
Aaon black
5.78:1passpassfail
  • AAA: use #7b9d9d as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #688d8d 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 #688d8d
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 #688d8d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/688d8d-a2bbbe-d45994-1f272d-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