Hex #337866 or rgb(51,120,102) in RGB space is the tint of greenish cian. It has hue angle of 164.35 degrees, value = 47 and saturation = 58. #337866 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of cyan, 1 drop of white, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #337866 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337866 to the mixer and play with it.