Hex #156f95 or rgb(21,111,149) in RGB space is the tint of bluish cian. It has hue angle of 197.81 degrees, value = 58 and saturation = 86. #156f95 can be obtained by mixing 4 colors: 1 drop of magenta, 2 drops of blue, 5 drops of cyan, 4 drops of black.
Nearest safe hex - #006699. Below you can see the block with #156f95 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #156f95 to the mixer and play with it.