Hex #408b55 or rgb(64,139,85) in RGB space is the tint of bluish green. It has hue angle of 136.80 degrees, value = 55 and saturation = 54. #408b55 can be obtained by mixing 4 colors: 3 drops of red, 4 drops of cyan, 4 drops of green, 1 drop of black.
Nearest safe hex - #339966. Below you can see the block with #408b55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #408b55 to the mixer and play with it.