Hex #337e67 or rgb(51,126,103) in RGB space is the tint of greenish cian. It has hue angle of 161.60 degrees, value = 49 and saturation = 60. #337e67 can be obtained by mixing 3 colors: 1 drop of yellow, 3 drops of blue, 1 drop of green.
Nearest safe hex - #336666. Below you can see the block with #337e67 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #337e67 to the mixer and play with it.