Hex #8bb3b9 or rgb(139,179,185) in RGB space is the tint of bluish cian. It has hue angle of 187.83 degrees, value = 73 and saturation = 25. #8bb3b9 can be obtained by mixing 4 colors: 2 drops of red, 4 drops of cyan, 4 drops of white, 1 drop of black.
Nearest safe hex - #99cccc. Below you can see the block with #8bb3b9 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8bb3b9 to the mixer and play with it.