Color

#666b05

#666b05
hex#666b05
rgbrgb(102, 107, 5)
hslhsl(63, 91%, 22%)
oklchoklch(0.506 0.111 113)
Closest name: Forestial Outpost (#556611)Relative luminance 0.1335

Colors that go with #666b05

Charcoal, Blue Violet and 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 #666b05

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0a056b

#6b3d05 · #336b05

#05666b · #6b0566

Split-complementary

Open in tool →

#05336b · #3d056b

#056b3d · #0a056b · #6b0533

Contrast

#666b05 as textRatioAAAA largeAAAFix
Aaon white
5.72:1passpassfail
  • AAA: use #585d04 as the text (7.04:1)
Aaon black
3.67:1failpassfail
  • AA: use #747a06 as the text (4.53:1)
  • AAA: use #949c07 as the text (7.02:1)
  • AA: or shift the background to #e6e6e6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #666b05 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

#666b05 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #666b05
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 #666b05 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/666b05-b9bea2-4e8ddf-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