Color

#688d8a

#688d8a
hex#688d8a
rgbrgb(104, 141, 138)
hslhsl(175, 15%, 48%)
oklchoklch(0.615 0.041 189.9)
Closest name: Arctic (#648589)Relative luminance 0.2383

Colors that go with #688d8a

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.

Real palettes that use #688d8a

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#8d686b

#688d77 · #687d8d

#8a688d · #8d8a68

Split-complementary

Open in tool →

#8d687d · #8d7768

#77688d · #8d686b · #7d8d68

Contrast

#688d8a as textRatioAAAA largeAAAFix
Aaon white
3.64:1failpassfail
  • AA: use #5b7b78 as the text (4.62:1)
  • AAA: use #435b59 as the text (7.29:1)
  • AA: or shift the background to #1f1f1f (4.53:1)
Aaon black
5.77:1passpassfail
  • AAA: use #7b9d9b 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 #688d8a 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 #688d8a
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 #688d8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/688d8a-a2bdbe-d4599f-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