Hex #408d4e or rgb(64,141,78) in RGB space is the tint of bluish green. It has hue angle of 130.91 degrees, value = 55 and saturation = 55. #408d4e can be obtained by mixing 4 colors: 3 drops of red, 1 drop of blue, 3 drops of cyan, 5 drops of green.
Nearest safe hex - #339966. Below you can see the block with #408d4e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #408d4e to the mixer and play with it.