Hex #337380 or rgb(51,115,128) in RGB space is the tint of bluish cian. It has hue angle of 190.13 degrees, value = 50 and saturation = 60. #337380 can be obtained by mixing 4 colors: 1 drop of magenta, 5 drops of blue, 3 drops of green, 1 drop of white.
Nearest safe hex - #336699. Below you can see the block with #337380 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337380 to the mixer and play with it.