Color

#666d26

#666d26
hex#666d26
rgbrgb(102, 109, 38)
hslhsl(66, 48%, 29%)
oklchoklch(0.513 0.094 114.5)
Closest name: darkolivegreen (#556b2f)Relative luminance 0.139

Colors that go with #666d26

Charcoal, Royal Blue and Blue Violet 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 #666d26

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2e266d

#6d5126 · #436d26

#26666d · #6d2666

Split-complementary

Open in tool →

#26436d · #51266d

#266d51 · #2e266d · #6d2643

Contrast

#666d26 as textRatioAAAA largeAAAFix
Aaon white
5.55:1passpassfail
  • AAA: use #555b20 as the text (7.23:1)
Aaon black
3.78:1failpassfail
  • AA: use #747d2c as the text (4.71:1)
  • AAA: use #949f38 as the text (7.28:1)
  • AA: or shift the background to #e8e8e8 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #666d26 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

#666d26 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #666d26
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 #666d26 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/666d26-b8bea2-4e86df-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