Hex #9fa8b5 or rgb(159,168,181) in RGB space is the tint of blue. It has hue angle of 215.45 degrees, value = 71 and saturation = 12. #9fa8b5 can be obtained by mixing 3 colors: 1 drop of blue, 5 drops of white, 2 drops of black.
Nearest safe hex - #9999cc. Below you can see the block with #9fa8b5 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #9fa8b5 to the mixer and play with it.