Color

#669b50

#669b50
hex#669b50
rgbrgb(102, 155, 80)
hslhsl(102, 32%, 46%)
oklchoklch(0.634 0.12 137.2)
Closest name: Bitter Leaf (#669841)Relative luminance 0.2685

Colors that go with #669b50

Charcoal, Blue and Copper 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 →

#84509b

#8c9b50 · #509b5f

#50669b · #9b5066

Split-complementary

Open in tool →

#5f509b · #9b508c

#508c9b · #84509b · #9b5f50

Contrast

#669b50 as textRatioAAAA largeAAAFix
Aaon white
3.3:1failpassfail
  • AA: use #548042 as the text (4.62:1)
  • AAA: use #3e5e31 as the text (7.37:1)
  • AA: or shift the background to #262626 (4.59:1)
Aaon black
6.37:1passpassfail
  • AAA: use #6da555 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #669b50 as the background.

Brands using this color

mcpConnect your agent — build around #669b50
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 #669b50 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/669b50-a7bea2-6e4edf-1f2d21-eff1e9?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