Hex #399f68 or rgb(57,159,104) in RGB space is the tint of teal. It has hue angle of 147.65 degrees, value = 62 and saturation = 64. #399f68 can be obtained by mixing 4 colors: 1 drop of red, 1 drop of magenta, 3 drops of cyan, 4 drops of green.
Nearest safe hex - #339966. Below you can see the block with #399f68 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #399f68 to the mixer and play with it.