Hex #004831 or rgb(0,72,49) in RGB space is the tint of greenish cian. It has hue angle of 160.83 degrees, value = 28 and saturation = 100. #004831 can be obtained by mixing 3 colors: 2 drops of blue, 2 drops of green, 3 drops of black.
Nearest safe hex - #003333. Below you can see the block with #004831 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #004831 to the mixer and play with it.