Color

#66a512

#66a512
hex#66a512
rgbrgb(102, 165, 18)
hslhsl(86, 80%, 36%)
oklchoklch(0.654 0.176 131.9)
Closest name: Botanical Garden (#44aa11)Relative luminance 0.2978

Colors that go with #66a512

Blue, Dodger Blue and Taupe 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 →

#5212a5

#a59b12 · #1ca512

#1266a5 · #a51266

Split-complementary

Open in tool →

#121ca5 · #9b12a5

#12a59b · #5212a5 · #a5121c

Contrast

#66a512 as textRatioAAAA largeAAAFix
Aaon white
3.02:1failpassfail
  • AA: use #4f810e as the text (4.69:1)
  • AAA: use #3b600b as the text (7.33:1)
  • AA: or shift the background to #2b2b2b (4.69:1)
Aaon black
6.96:1passpassfail
  • AAA: use #68aa13 as the text (7.35:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #66a512 as the background.

Brands using this color

mcpConnect your agent — build around #66a512
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 #66a512 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66a512-afbea2-4e56df-212d1f-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