Color

#66ebf0

#66ebf0
hex#66ebf0
rgbrgb(102, 235, 240)
hslhsl(182, 82%, 67%)
oklchoklch(0.869 0.116 198.7)
Closest name: Bath Water (#88eeee)Relative luminance 0.6853

Colors that go with #66ebf0

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 #66ebf0

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f06a66

#66f0af · #66a6f0

#f066eb · #ebf066

Split-complementary

Open in tool →

#f066a6 · #f0af66

#af66f0 · #f06a66 · #a6f066

Contrast

#66ebf0 as textRatioAAAA largeAAAFix
Aaon white
1.43:1failfailfail
  • AA: use #0d8387 as the text (4.55:1)
  • AAA: use #0a6366 as the text (7.02:1)
  • AA: or shift the background to #5e5e5e (4.54:1)
  • AAA: or shift the background to #424242 (7.04:1)
Aaon black
14.71:1passpasspassPasses 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 #66ebf0 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#66ebf0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #66ebf0
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 #66ebf0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66ebf0-a2babe-d45990-1f272d-e9f1ee?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