Hex #397868 or rgb(57,120,104) in RGB space is the tint of greenish cian. It has hue angle of 164.76 degrees, value = 47 and saturation = 53. #397868 can be obtained by mixing 4 colors: 1 drop of red, 4 drops of blue, 3 drops of green, 1 drop of white.
Nearest safe hex - #336666. Below you can see the block with #397868 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #397868 to the mixer and play with it.