Hex #398bd0 or rgb(57,139,208) in RGB space is the tint of blue. It has hue angle of 207.42 degrees, value = 82 and saturation = 73. #398bd0 can be obtained by mixing 4 colors: 1 drop of magenta, 4 drops of blue, 3 drops of cyan, 1 drop of white.
Nearest safe hex - #3399cc. Below you can see the block with #398bd0 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #398bd0 to the mixer and play with it.