Color

#66dbb2

#66dbb2
hex#66dbb2
rgbrgb(102, 219, 178)
hslhsl(159, 62%, 63%)
oklchoklch(0.812 0.123 167.7)
Closest name: Crystal Gem (#79d0a7)Relative luminance 0.567

Colors that go with #66dbb2

Charcoal, Plum and Crimson 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.

Real palettes that use #66dbb2

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#db668f

#66db78 · #66cadb

#b266db · #dbb266

Split-complementary

Open in tool →

#db66ca · #db7866

#7866db · #db668f · #cadb66

Contrast

#66dbb2 as textRatioAAAA largeAAAFix
Aaon white
1.7:1failfailfail
  • AA: use #1f8461 as the text (4.63:1)
  • AAA: use #176349 as the text (7.2:1)
  • AA: or shift the background to #525252 (4.59:1)
  • AAA: or shift the background to #363636 (7.1:1)
Aaon black
12.34:1passpasspassPasses 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 #66dbb2 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 #66dbb2
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 #66dbb2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66dbb2-a2beb8-d459c0-1f2c2d-e9f1eb?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