Hex #15642b or rgb(21,100,43) in RGB space is the tint of bluish green. It has hue angle of 136.71 degrees, value = 39 and saturation = 79. #15642b can be obtained by mixing 4 colors: 1 drop of red, 2 drops of cyan, 4 drops of green, 5 drops of black.
Nearest safe hex - #006633. Below you can see the block with #15642b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #15642b to the mixer and play with it.