Hex #337b9f or rgb(51,123,159) in RGB space is the tint of bluish cian. It has hue angle of 200.00 degrees, value = 62 and saturation = 68. #337b9f can be obtained by mixing 4 colors: 3 drops of magenta, 5 drops of blue, 4 drops of cyan, 3 drops of green.
Nearest safe hex - #336699. Below you can see the block with #337b9f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337b9f to the mixer and play with it.