Hex #155f47 or rgb(21,95,71) in RGB space is the tint of greenish cian. It has hue angle of 160.54 degrees, value = 37 and saturation = 78. #155f47 can be obtained by mixing 4 colors: 1 drop of yellow, 5 drops of blue, 3 drops of green, 3 drops of black.
Nearest safe hex - #006633. Below you can see the block with #155f47 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #155f47 to the mixer and play with it.