Hex #8bb1b9 or rgb(139,177,185) in RGB space is the tint of bluish cian. It has hue angle of 190.43 degrees, value = 73 and saturation = 25. #8bb1b9 can be obtained by mixing 3 colors: 3 drops of red, 5 drops of cyan, 3 drops of white.
Nearest safe hex - #9999cc. Below you can see the block with #8bb1b9 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8bb1b9 to the mixer and play with it.