Hex #408d55 or rgb(64,141,85) in RGB space is the tint of bluish green. It has hue angle of 136.36 degrees, value = 55 and saturation = 55. #408d55 can be obtained by mixing 4 colors: 1 drop of blue, 3 drops of green, 2 drops of white, 2 drops of black.
Nearest safe hex - #339966. Below you can see the block with #408d55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #408d55 to the mixer and play with it.