Color

#66e147

#66e147
hex#66e147
rgbrgb(102, 225, 71)
hslhsl(108, 72%, 58%)
oklchoklch(0.809 0.221 140)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5713

Colors that go with #66e147

Deep Sky Blue, Taupe and Violet 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 →

#c247e1

#b3e147 · #47e175

#4766e1 · #e14766

Split-complementary

Open in tool →

#7547e1 · #e147b3

#47b3e1 · #c247e1 · #e17547

Contrast

#66e147 as textRatioAAAA largeAAAFix
Aaon white
1.69:1failfailfail
  • AA: use #2d8816 as the text (4.52:1)
  • AAA: use #216510 as the text (7.16:1)
  • AA: or shift the background to #525252 (4.62:1)
  • AAA: or shift the background to #363636 (7.15:1)
Aaon black
12.43:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #66e147 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 #66e147
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 #66e147 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66e147-a4bea2-7c4edf-1f2d23-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