Color

#666a2f

#666a2f
hex#666a2f
rgbrgb(102, 106, 47)
hslhsl(64, 39%, 30%)
oklchoklch(0.507 0.082 112.5)
Closest name: darkolivegreen (#556b2f)Relative luminance 0.1334

Colors that go with #666a2f

Charcoal, Royal Blue and Slate Blue 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 #666a2f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#332f6a

#6a502f · #496a2f

#2f666a · #6a2f66

Split-complementary

Open in tool →

#2f496a · #502f6a

#2f6a50 · #332f6a · #6a2f49

Contrast

#666a2f as textRatioAAAA largeAAAFix
Aaon white
5.73:1passpassfail
  • AAA: use #595c28 as the text (7.03:1)
Aaon black
3.67:1failpassfail
  • AA: use #747935 as the text (4.53:1)
  • AAA: use #969c44 as the text (7.14:1)
  • AA: or shift the background to #e6e6e6 (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #666a2f 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

#666a2f reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #666a2f
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 #666a2f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/666a2f-b9bea2-4e8adf-262d1f-f1eee9?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