Hex #408e72 or rgb(64,142,114) in RGB space is the tint of greenish cian. It has hue angle of 158.46 degrees, value = 56 and saturation = 55. #408e72 can be obtained by mixing 4 colors: 1 drop of magenta, 4 drops of blue, 5 drops of green, 2 drops of white.
Nearest safe hex - #339966. Below you can see the block with #408e72 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #408e72 to the mixer and play with it.