Hex #158287 or rgb(21,130,135) in RGB space is the tint of cyan. It has hue angle of 182.63 degrees, value = 53 and saturation = 84. #158287 can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of blue, 5 drops of cyan, 4 drops of black.
Nearest safe hex - #009999. Below you can see the block with #158287 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #158287 to the mixer and play with it.