Color

#66e176

#66e176
hex#66e176
rgbrgb(102, 225, 118)
hslhsl(128, 67%, 64%)
oklchoklch(0.815 0.183 146.2)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5798

Colors that go with #66e176

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 →

#e166d0

#93e166 · #66e1b4

#7666e1 · #e17666

Split-complementary

Open in tool →

#b466e1 · #e16693

#6693e1 · #e166d0 · #e1b466

Contrast

#66e176 as textRatioAAAA largeAAAFix
Aaon white
1.67:1failfailfail
  • AA: use #1b882a as the text (4.56:1)
  • AAA: use #14661f as the text (7.12:1)
  • AA: or shift the background to #545454 (4.54:1)
  • AAA: or shift the background to #383838 (7.03:1)
Aaon black
12.6:1passpasspassPasses 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 #66e176 as the background.

Brands using this color

mcpConnect your agent — build around #66e176
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 #66e176 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66e176-a2bea9-ac4edf-1f2d27-ecf1e9?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