Hex #155447 or rgb(21,84,71) in RGB space is the tint of greenish cian. It has hue angle of 167.62 degrees, value = 33 and saturation = 75. #155447 can be obtained by mixing 4 colors: 1 drop of magenta, 4 drops of blue, 4 drops of green, 3 drops of black.
Nearest safe hex - #006633. Below you can see the block with #155447 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #155447 to the mixer and play with it.