Hex #396d71 or rgb(57,109,113) in RGB space is the tint of cyan. It has hue angle of 184.29 degrees, value = 44 and saturation = 50. #396d71 can be obtained by mixing 3 colors: 2 drops of cyan, 2 drops of white, 5 drops of black.
Nearest safe hex - #336666. Below you can see the block with #396d71 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #396d71 to the mixer and play with it.