Color

#665b57

#665b57
hex#665b57
rgbrgb(102, 91, 87)
hslhsl(16, 8%, 37%)
oklchoklch(0.48 0.016 41.1)
Closest name: Bark (#5f5854)Relative luminance 0.11

Colors that go with #665b57

Charcoal, Champagne and Copper 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 →

#576266

#66575a · #666257

#57665b · #5b5766

Split-complementary

Open in tool →

#576662 · #575a66

#5a6657 · #576266 · #625766

Contrast

#665b57 as textRatioAAAA largeAAAFix
Aaon white
6.56:1passpassfail
  • AAA: use #605652 as the text (7.12:1)
Aaon black
3.2:1failpassfail
  • AA: use #81736e as the text (4.61:1)
  • AAA: use #9f938e as the text (7.04:1)
  • AA: or shift the background to #d6d6d6 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #665b57 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

Fonts for this mood

#665b57 reads as muted, minimal. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #665b57
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 #665b57 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/665b57-c4ab9c-62cbb4-2d291f-f1e9eb?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