Color

#666d09

#666d09
hex#666d09
rgbrgb(102, 109, 9)
hslhsl(64, 85%, 23%)
oklchoklch(0.512 0.112 114.2)
Closest name: darkolivegreen (#556b2f)Relative luminance 0.1378

Colors that go with #666d09

Charcoal, Blue Violet 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 #666d09

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0f096d

#6d4109 · #346d09

#09666d · #6d0966

Split-complementary

Open in tool →

#09346d · #41096d

#096d41 · #0f096d · #6d0934

Contrast

#666d09 as textRatioAAAA largeAAAFix
Aaon white
5.59:1passpassfail
  • AAA: use #545a07 as the text (7.39:1)
Aaon black
3.76:1failpassfail
  • AA: use #737b0a as the text (4.57:1)
  • AAA: use #97a00d as the text (7.35:1)
  • AA: or shift the background to #e8e8e8 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #666d09 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

#666d09 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #666d09
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 #666d09 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/666d09-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