Hex #155439 or rgb(21,84,57) in RGB space is the tint of teal. It has hue angle of 154.29 degrees, value = 33 and saturation = 75. #155439 can be obtained by mixing 4 colors: 1 drop of red, 4 drops of blue, 4 drops of green, 3 drops of black.
Nearest safe hex - #006633. Below you can see the block with #155439 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #155439 to the mixer and play with it.