Color

#668d3f

#668d3f
hex#668d3f
rgbrgb(102, 141, 63)
hslhsl(90, 38%, 40%)
oklchoklch(0.596 0.116 131.2)
Closest name: Hidden Paradise (#5e8b3d)Relative luminance 0.2223

Colors that go with #668d3f

Charcoal, Copper and Crimson 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#663f8d

#8d8d3f · #3f8d3f

#3f668d · #8d3f66

Split-complementary

Open in tool →

#3f3f8d · #8d3f8d

#3f8d8d · #663f8d · #8d3f3f

Contrast

#668d3f as textRatioAAAA largeAAAFix
Aaon white
3.86:1failpassfail
  • AA: use #5c7f39 as the text (4.62:1)
  • AAA: use #455f2b as the text (7.18:1)
  • AA: or shift the background to #1a1a1a (4.51:1)
Aaon black
5.45:1passpassfail
  • AAA: use #75a249 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #668d3f as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #668d3f
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 #668d3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668d3f-adbea2-514edf-202d1f-f1f1e9?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