Color

#6c8da3

#6c8da3
hex#6c8da3
rgbrgb(108, 141, 163)
hslhsl(204, 23%, 53%)
oklchoklch(0.626 0.05 237.8)
Closest name: lightslategray (#778899)Relative luminance 0.2488

Colors that go with #6c8da3

Charcoal, Copper and Cobalt Blue 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 →

#a3826c

#6ca39d · #6c71a3

#a36c8d · #8da36c

Split-complementary

Open in tool →

#a36c71 · #a39d6c

#9d6ca3 · #a3826c · #71a36c

Contrast

#6c8da3 as textRatioAAAA largeAAAFix
Aaon white
3.51:1failpassfail
  • AA: use #58788d as the text (4.68:1)
  • AAA: use #435b6b as the text (7.12:1)
  • AA: or shift the background to #212121 (4.58:1)
Aaon black
5.98:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6c8da3 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #6c8da3
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 #6c8da3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6c8da3-9cafc4-df4e5a-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