Color

#665a77

#665a77
hex#665a77
rgbrgb(102, 90, 119)
hslhsl(265, 14%, 41%)
oklchoklch(0.49 0.048 303.6)
Closest name: Plummy (#675a75)Relative luminance 0.1147

Colors that go with #665a77

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 →

#6b775a

#5a5c77 · #755a77

#77665a · #5a7766

Split-complementary

Open in tool →

#77755a · #5c775a

#775a5c · #6b775a · #5a7775

Contrast

#665a77 as textRatioAAAA largeAAAFix
Aaon white
6.38:1passpassfail
  • AAA: use #5f536e as the text (7.12:1)
Aaon black
3.29:1failpassfail
  • AA: use #7d6e91 as the text (4.51:1)
  • AAA: use #9c91ac as the text (7.06:1)
  • AA: or shift the background to #d9d9d9 (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 #665a77 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 #665a77
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 #665a77 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/665a77-b19cc4-dfd54e-2b1f2d-e9eaf1?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