Hex #156d32 or rgb(21,109,50) in RGB space is the tint of bluish green. It has hue angle of 139.77 degrees, value = 43 and saturation = 81. #156d32 can be obtained by mixing 4 colors: 2 drops of blue, 5 drops of green, 1 drop of white, 4 drops of black.
Nearest safe hex - #006633. Below you can see the block with #156d32 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #156d32 to the mixer and play with it.