Color

#66e2eb

#66e2eb
hex#66e2eb
rgbrgb(102, 226, 235)
hslhsl(184, 77%, 66%)
oklchoklch(0.846 0.111 201.8)
Closest name: Cold Blue (#88dddd)Relative luminance 0.6322

Colors that go with #66e2eb

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 #66e2eb

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eb6e66

#66ebb1 · #669feb

#eb66e2 · #e2eb66

Split-complementary

Open in tool →

#eb669f · #ebb166

#b166eb · #eb6e66 · #9feb66

Contrast

#66e2eb as textRatioAAAA largeAAAFix
Aaon white
1.54:1failfailfail
  • AA: use #128087 as the text (4.71:1)
  • AAA: use #0d6268 as the text (7.08:1)
  • AA: or shift the background to #595959 (4.55:1)
  • AAA: or shift the background to #3d3d3d (7.06:1)
Aaon black
13.64:1passpasspassPasses 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 #66e2eb 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

#66e2eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #66e2eb
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 #66e2eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66e2eb-a2b9be-df4e8a-1f262d-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