Hex #337566 or rgb(51,117,102) in RGB space is the tint of greenish cian. It has hue angle of 166.36 degrees, value = 46 and saturation = 56. #337566 can be obtained by mixing 4 colors: 2 drops of cyan, 1 drop of green, 2 drops of white, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #337566 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337566 to the mixer and play with it.