Color

#6c8a9d

#6c8a9d
hex#6c8a9d
rgbrgb(108, 138, 157)
hslhsl(203, 20%, 52%)
oklchoklch(0.617 0.045 236.2)
Closest name: lightslategray (#778899)Relative luminance 0.238

Colors that go with #6c8a9d

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 →

#9d7f6c

#6c9d97 · #6c729d

#9d6c8a · #8a9d6c

Split-complementary

Open in tool →

#9d6c72 · #9d976c

#976c9d · #9d7f6c · #729d6c

Contrast

#6c8a9d as textRatioAAAA largeAAAFix
Aaon white
3.65:1failpassfail
  • AA: use #5c788a as the text (4.66:1)
  • AAA: use #455b68 as the text (7.12:1)
  • AA: or shift the background to #1f1f1f (4.52:1)
Aaon black
5.76:1passpassfail
  • AAA: use #7e99a9 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6c8a9d as the background.

Brands using this color

mcpConnect your agent — build around #6c8a9d
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 #6c8a9d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6c8a9d-9cb0c4-df4e5d-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