Hex #66a6c7 or rgb(102,166,199) in RGB space is the tint of bluish cian. It has hue angle of 200.41 degrees, value = 78 and saturation = 49. #66a6c7 can be obtained by mixing 4 colors: 2 drops of red, 4 drops of blue, 5 drops of cyan, 4 drops of white.
Nearest safe hex - #6699cc. Below you can see the block with #66a6c7 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66a6c7 to the mixer and play with it.