Hex #408e79 or rgb(64,142,121) in RGB space is the tint of greenish cian. It has hue angle of 163.85 degrees, value = 56 and saturation = 55. #408e79 can be obtained by mixing 4 colors: 3 drops of yellow, 4 drops of blue, 3 drops of cyan, 2 drops of black.
Nearest safe hex - #339966. Below you can see the block with #408e79 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #408e79 to the mixer and play with it.