Hex #156724 or rgb(21,103,36) in RGB space is the tint of bluish green. It has hue angle of 130.98 degrees, value = 40 and saturation = 80. #156724 can be obtained by mixing 4 colors: 1 drop of blue, 5 drops of green, 1 drop of white, 5 drops of black.
Nearest safe hex - #006633. Below you can see the block with #156724 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #156724 to the mixer and play with it.