Hex #99adcc or rgb(153,173,204) in RGB space is the tint of blue. It has hue angle of 216.47 degrees, value = 80 and saturation = 25. #99adcc can be obtained by mixing 4 colors: 1 drop of red, 3 drops of blue, 1 drop of cyan, 5 drops of white.
Nearest safe hex - #9999cc. Below you can see the block with #99adcc color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99adcc to the mixer and play with it.