Hex #157c55 or rgb(21,124,85) in RGB space is the tint of teal. It has hue angle of 157.28 degrees, value = 49 and saturation = 83. #157c55 can be obtained by mixing 4 colors: 1 drop of red, 4 drops of cyan, 3 drops of green, 4 drops of black.
Nearest safe hex - #006666. Below you can see the block with #157c55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #157c55 to the mixer and play with it.