Hex #66a6dd or rgb(102,166,221) in RGB space is the tint of blue. It has hue angle of 207.73 degrees, value = 87 and saturation = 54. #66a6dd can be obtained by mixing 4 colors: 2 drops of magenta, 4 drops of blue, 5 drops of cyan, 4 drops of white.
Nearest safe hex - #6699cc. Below you can see the block with #66a6dd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66a6dd to the mixer and play with it.