Color

#66eb87

#66eb87
hex#66eb87
rgbrgb(102, 235, 135)
hslhsl(135, 77%, 66%)
oklchoklch(0.842 0.181 149.1)
Closest name: Grotesque Green (#64e986)Relative luminance 0.6399

Colors that go with #66eb87

Charcoal, Deep Sky 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 →

#eb66ca

#87eb66 · #66ebca

#8766eb · #eb8766

Split-complementary

Open in tool →

#ca66eb · #eb6687

#6687eb · #eb66ca · #ebca66

Contrast

#66eb87 as textRatioAAAA largeAAAFix
Aaon white
1.52:1failfailfail
  • AA: use #12872f as the text (4.63:1)
  • AAA: use #0d6323 as the text (7.43:1)
  • AA: or shift the background to #595959 (4.6:1)
  • AAA: or shift the background to #3d3d3d (7.14:1)
Aaon black
13.8:1passpasspassPasses 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 #66eb87 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 #66eb87
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 #66eb87 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66eb87-a2beac-b759d4-1f2d29-ebf1e9?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