Hex #158695 or rgb(21,134,149) in RGB space is the tint of cyan. It has hue angle of 187.03 degrees, value = 58 and saturation = 86. #158695 can be obtained by mixing 4 colors: 1 drop of magenta, 5 drops of blue, 3 drops of cyan, 3 drops of green.
Nearest safe hex - #009999. Below you can see the block with #158695 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #158695 to the mixer and play with it.