Color

#664d64

#664d64
hex#664d64
rgbrgb(102, 77, 100)
hslhsl(305, 14%, 35%)
oklchoklch(0.455 0.048 329)
Closest name: Hibernation (#6f5166)Relative luminance 0.0905

Colors that go with #664d64

Teal, Sea Green and Champagne 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 #664d64

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4d664f

#5b4d66 · #664d57

#64664d · #4d6466

Split-complementary

Open in tool →

#57664d · #4d665b

#665b4d · #4d664f · #4d5766

Contrast

#664d64 as textRatioAAAA largeAAAFix
Aaon white
7.47:1passpasspassPasses AAA — no fix needed.
Aaon black
2.81:1failfailfail
  • AA: use #8e6b8c as the text (4.63:1)
  • AAA: use #a98ea7 as the text (7.11:1)
  • AA: or shift the background to #c9c9c9 (4.51:1)
  • AAA: or shift the background to #fafafa (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #664d64 as the background.

Brands using this color

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

Fonts for this mood

#664d64 reads as warm, muted, editorial. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #664d64
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 #664d64 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/664d64-c19fba-8ccb62-2d1f26-eee9f1?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