Color

#66ebe7

#66ebe7
hex#66ebe7
rgbrgb(102, 235, 231)
hslhsl(178, 77%, 66%)
oklchoklch(0.866 0.116 192.5)
Closest name: Bath Water (#88eeee)Relative luminance 0.6801

Colors that go with #66ebe7

Charcoal, Deep Sky Blue and Light Coral 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 #66ebe7

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eb666a

#66eba4 · #66adeb

#e766eb · #ebe766

Split-complementary

Open in tool →

#eb66ad · #eba466

#a466eb · #eb666a · #adeb66

Contrast

#66ebe7 as textRatioAAAA largeAAAFix
Aaon white
1.44:1failfailfail
  • AA: use #11837f as the text (4.59:1)
  • AAA: use #0d6360 as the text (7.07:1)
  • AA: or shift the background to #5e5e5e (4.51:1)
  • AAA: or shift the background to #404040 (7.21:1)
Aaon black
14.6:1passpasspassPasses 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 #66ebe7 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 #66ebe7
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 #66ebe7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66ebe7-a2bcbe-d45999-1f282d-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