Color

#66c2bc

#66c2bc
hex#66c2bc
rgbrgb(102, 194, 188)
hslhsl(176, 43%, 58%)
oklchoklch(0.756 0.089 189.9)
Closest name: Cockatoo (#58c8b6)Relative luminance 0.4504

Colors that go with #66c2bc

Charcoal, Light Coral and Blush Pink 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 →

#c2666c

#66c28e · #669ac2

#bc66c2 · #c2bc66

Split-complementary

Open in tool →

#c2669a · #c28e66

#8e66c2 · #c2666c · #9ac266

Contrast

#66c2bc as textRatioAAAA largeAAAFix
Aaon white
2.1:1failfailfail
  • AA: use #33807b as the text (4.65:1)
  • AAA: use #27625f as the text (7:1)
  • AA: or shift the background to #454545 (4.57:1)
  • AAA: or shift the background to #262626 (7.21:1)
Aaon black
10.01:1passpasspassPasses 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 #66c2bc 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 #66c2bc
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 #66c2bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66c2bc-a2bdbe-d4599d-1f282d-e9f1ed?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