Color

#688b8d

#688b8d
hex#688b8d
rgbrgb(104, 139, 141)
hslhsl(183, 15%, 48%)
oklchoklch(0.611 0.039 200.6)
Closest name: Arctic (#648589)Relative luminance 0.2333

Colors that go with #688b8d

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 →

#8d6a68

#688d7c · #68798d

#8d688b · #8b8d68

Split-complementary

Open in tool →

#8d6879 · #8d7c68

#7c688d · #8d6a68 · #798d68

Contrast

#688b8d as textRatioAAAA largeAAAFix
Aaon white
3.71:1failpassfail
  • AA: use #5d7c7e as the text (4.52:1)
  • AAA: use #455d5e as the text (7.05:1)
  • AA: or shift the background to #1c1c1c (4.6:1)
Aaon black
5.67:1passpassfail
  • AAA: use #7b9c9d as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #688b8d 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 #688b8d
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 #688b8d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/688b8d-a2b9be-d4598e-1f262d-e9f1ee?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