Hex #15481d or rgb(21,72,29) in RGB space is the tint of bluish green. It has hue angle of 129.41 degrees, value = 28 and saturation = 71. #15481d can be obtained by mixing 4 colors: 1 drop of red, 2 drops of blue, 4 drops of green, 5 drops of black.
Nearest safe hex - #003333. Below you can see the block with #15481d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #15481d to the mixer and play with it.