Hex #157279 or rgb(21,114,121) in RGB space is the tint of cyan. It has hue angle of 184.20 degrees, value = 47 and saturation = 83. #157279 can be obtained by mixing 4 colors: 1 drop of magenta, 5 drops of cyan, 1 drop of green, 5 drops of black.
Nearest safe hex - #006666. Below you can see the block with #157279 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #157279 to the mixer and play with it.