Color

#666742

#666742
hex#666742
rgbrgb(102, 103, 66)
hslhsl(62, 22%, 33%)
oklchoklch(0.503 0.055 109.5)
Closest name: Eat Your Greens (#696845)Relative luminance 0.1292

Colors that go with #666742

Charcoal, Slate Blue 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 #666742

Tints & shades

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

Harmonies

Complementary

Open in tool →

#434267

#675542 · #536742

#426567 · #674265

Split-complementary

Open in tool →

#425367 · #554267

#426755 · #434267 · #674253

Contrast

#666742 as textRatioAAAA largeAAAFix
Aaon white
5.86:1passpassfail
  • AAA: use #595a3a as the text (7.12:1)
Aaon black
3.58:1failpassfail
  • AA: use #78794e as the text (4.64:1)
  • AAA: use #9a9c63 as the text (7.31:1)
  • AA: or shift the background to #e3e3e3 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #666742 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

mcpConnect your agent — build around #666742
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 #666742 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/666742-babea2-4e8fdf-272d1f-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