Hex #337d6f or rgb(51,125,111) in RGB space is the tint of greenish cian. It has hue angle of 168.65 degrees, value = 49 and saturation = 59. #337d6f can be obtained by mixing 4 colors: 2 drops of magenta, 3 drops of cyan, 3 drops of green, 2 drops of black.
Nearest safe hex - #336666. Below you can see the block with #337d6f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337d6f to the mixer and play with it.