Hex #337a80 or rgb(51,122,128) in RGB space is the tint of cyan. It has hue angle of 184.68 degrees, value = 50 and saturation = 60. #337a80 can be obtained by mixing 3 colors: 3 drops of cyan, 2 drops of white, 5 drops of black.
Nearest safe hex - #336699. Below you can see the block with #337a80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337a80 to the mixer and play with it.