Color

#677b89

#677b89
hex#677b89
rgbrgb(103, 123, 137)
hslhsl(205, 14%, 47%)
oklchoklch(0.572 0.032 238.7)
Closest name: Citadel (#6a7f8b)Relative luminance 0.1886

Colors that go with #677b89

Charcoal, Copper and Amber 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 #677b89

Tints & shades

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

Harmonies

Complementary

Open in tool →

#897567

#678986 · #676a89

#89677b · #7b8967

Split-complementary

Open in tool →

#89676a · #898667

#866789 · #897567 · #6a8967

Contrast

#677b89 as textRatioAAAA largeAAAFix
Aaon white
4.4:1failpassfail
  • AA: use #657886 as the text (4.58:1)
  • AAA: use #4b5963 as the text (7.22:1)
  • AA: or shift the background to #080808 (4.55:1)
Aaon black
4.77:1passpassfail
  • AAA: use #8899a5 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 #677b89 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 #677b89
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 #677b89 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/677b89-9cafc4-df4e58-1f212d-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