Aquarium Blue

#66CDAA · rgb(102, 205, 170)

Registry status

Reserved. #66CDAA is the CSS named color “mediumaquamarine”, one of a small set we keep out of the registry so no single person holds it.

See #6BC8A5, which looks the same and can be registered

Reference names

Names this exact code carries in public color lists. They are reference data, not registrations, and this code itself is reserved, so it can't be registered.

Aquarium BlueReference name · color-names (MIT)
mediumaquamarineReference name · CSS named colors (Public specification)

Tints and shades

Closest named colors

#5ECAAE

Tropical Tide

#5ECAAE

#6EC9A3

Minted Elegance

#6EC9A3

#5ACAA4

Diroset

#5ACAA4

#5AC7AC

Kauai

#5AC7AC

#68C89D

Intense Jade

#68C89D

#59C8A5

Mermaid’s Kiss

#59C8A5

#58CEB2

Simply Aqua

#58CEB2

#58C6AB

Shoreline Green

#58C6AB

#6DC1AC

Blue Energy

#6DC1AC

#6EC2B0

Miami Teal

#6EC2B0

#73C4A4

Gem Silica

#73C4A4

#6FC1AF

T-Bird Turquoise

#6FC1AF