Hex #3b5b8a or rgb(59,91,138) in RGB space is the tint of blue. It has hue angle of 215.70 degrees, value = 54 and saturation = 57. #3b5b8a can be obtained by mixing 3 colors: 3 drops of magenta, 5 drops of cyan, 5 drops of black.
Nearest safe hex - #336699. Below you can see the block with #3b5b8a color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #3b5b8a to the mixer and play with it.