Color

#664d5d

#664d5d
hex#664d5d
rgbrgb(102, 77, 93)
hslhsl(322, 14%, 35%)
oklchoklch(0.452 0.041 340.3)
Closest name: Hibernation (#6f5166)Relative luminance 0.0892

Colors that go with #664d5d

Teal, 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.

Real palettes that use #664d5d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4d6656

#624d66 · #664d50

#5d664d · #4d5d66

Split-complementary

Open in tool →

#50664d · #4d6662

#66624d · #4d6656 · #4d5066

Contrast

#664d5d as textRatioAAAA largeAAAFix
Aaon white
7.54:1passpasspassPasses AAA — no fix needed.
Aaon black
2.78:1failfailfail
  • AA: use #8e6b82 as the text (4.58:1)
  • AAA: use #a98e9f as the text (7.06:1)
  • AA: or shift the background to #c9c9c9 (4.55:1)
  • AAA: or shift the background to #f7f7f7 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #664d5d 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

#664d5d reads as warm, muted, editorial. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #664d5d
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 #664d5d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/664d5d-c19fb1-6ecb62-2d1f22-f0e9f1?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