Color

#6b909e

#6b909e
hex#6b909e
rgbrgb(107, 144, 158)
hslhsl(196, 21%, 52%)
oklchoklch(0.631 0.046 223.2)
Closest name: Cavolo Nero (#72939e)Relative luminance 0.2554

Colors that go with #6b909e

Charcoal, Copper and Crimson 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 #6b909e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9e796b

#6b9e92 · #6b779e

#9e6b91 · #919e6b

Split-complementary

Open in tool →

#9e6b77 · #9e926b

#926b9e · #9e796b · #779e6b

Contrast

#6b909e as textRatioAAAA largeAAAFix
Aaon white
3.44:1failpassfail
  • AA: use #597b88 as the text (4.55:1)
  • AAA: use #425c66 as the text (7.11:1)
  • AA: or shift the background to #242424 (4.52:1)
Aaon black
6.11:1passpassfail
  • AAA: use #7a9ca8 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 #6b909e 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 #6b909e
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 #6b909e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6b909e-9cb5c4-df4e6e-1f232d-e9f1ef?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