Hex #158895 or rgb(21,136,149) in RGB space is the tint of cyan. It has hue angle of 186.09 degrees, value = 58 and saturation = 86. #158895 can be obtained by mixing 4 colors: 1 drop of yellow, 3 drops of blue, 5 drops of cyan, 3 drops of black.
Nearest safe hex - #009999. Below you can see the block with #158895 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #158895 to the mixer and play with it.