Hex #337b6c or rgb(51,123,108) in RGB space is the tint of greenish cian. It has hue angle of 167.50 degrees, value = 48 and saturation = 59. #337b6c can be obtained by mixing 4 colors: 5 drops of blue, 4 drops of green, 3 drops of white, 3 drops of black.
Nearest safe hex - #336666. Below you can see the block with #337b6c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337b6c to the mixer and play with it.