Color

#66eace

#66eace
hex#66eace
rgbrgb(102, 234, 206)
hslhsl(167, 76%, 66%)
oklchoklch(0.856 0.123 177)
Closest name: Aphrodite Aqua (#45e9c1)Relative luminance 0.6613

Colors that go with #66eace

Charcoal, Crimson and Deep Sky Blue 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 →

#ea6683

#66ea8c · #66c5ea

#ce66ea · #eace66

Split-complementary

Open in tool →

#ea66c5 · #ea8c66

#8c66ea · #ea6683 · #c5ea66

Contrast

#66eace as textRatioAAAA largeAAAFix
Aaon white
1.48:1failfailfail
  • AA: use #12826a as the text (4.74:1)
  • AAA: use #0d6350 as the text (7.2:1)
  • AA: or shift the background to #5c5c5c (4.53:1)
  • AAA: or shift the background to #404040 (7.02:1)
Aaon black
14.23:1passpasspassPasses 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 #66eace 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 #66eace
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 #66eace and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66eace-a2bebb-d459af-1f2a2d-e9f1ec?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