Hex #66b6bb or rgb(102,182,187) in RGB space is the tint of cyan. It has hue angle of 183.53 degrees, value = 73 and saturation = 45. #66b6bb can be obtained by mixing 4 colors: 1 drop of magenta, 2 drops of cyan, 1 drop of green, 1 drop of white.
Nearest safe hex - #66cccc. Below you can see the block with #66b6bb color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66b6bb to the mixer and play with it.