Hex #398dbd or rgb(57,141,189) in RGB space is the tint of bluish cian. It has hue angle of 201.82 degrees, value = 74 and saturation = 70. #398dbd can be obtained by mixing 4 colors: 4 drops of blue, 2 drops of cyan, 2 drops of white, 1 drop of black.
Nearest safe hex - #3399cc. Below you can see the block with #398dbd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #398dbd to the mixer and play with it.