Hex #99c5cc or rgb(153,197,204) in RGB space is the tint of bluish cian. It has hue angle of 188.24 degrees, value = 80 and saturation = 25. #99c5cc can be obtained by mixing 3 colors: 1 drop of red, 2 drops of cyan, 2 drops of white.
Nearest safe hex - #99cccc. Below you can see the block with #99c5cc color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99c5cc to the mixer and play with it.