Hex #157e55 or rgb(21,126,85) in RGB space is the tint of teal. It has hue angle of 156.57 degrees, value = 49 and saturation = 83. #157e55 can be obtained by mixing 4 colors: 3 drops of cyan, 3 drops of green, 1 drop of white, 5 drops of black.
Nearest safe hex - #006666. Below you can see the block with #157e55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #157e55 to the mixer and play with it.