Color

#6d838d

#6d838d
hex#6d838d
rgbrgb(109, 131, 141)
hslhsl(199, 13%, 49%)
oklchoklch(0.596 0.03 227.1)
Closest name: Slate Gray (#708090)Relative luminance 0.2141

Colors that go with #6d838d

Charcoal, Champagne 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 →

#8d776d

#6d8d87 · #6d738d

#8d6d83 · #838d6d

Split-complementary

Open in tool →

#8d6d73 · #8d876d

#876d8d · #8d776d · #738d6d

Contrast

#6d838d as textRatioAAAA largeAAAFix
Aaon white
3.98:1failpassfail
  • AA: use #647882 as the text (4.61:1)
  • AAA: use #4b5b62 as the text (7.07:1)
  • AA: or shift the background to #171717 (4.51:1)
Aaon black
5.28:1passpassfail
  • AAA: use #8699a2 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6d838d 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 #6d838d
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 #6d838d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6d838d-9cb3c4-df4e66-1f232d-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