Hex #337691 or rgb(51,118,145) in RGB space is the tint of bluish cian. It has hue angle of 197.23 degrees, value = 57 and saturation = 65. #337691 can be obtained by mixing 4 colors: 2 drops of red, 4 drops of blue, 3 drops of cyan, 1 drop of green.
Nearest safe hex - #336699. Below you can see the block with #337691 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337691 to the mixer and play with it.