Hex #99c8cc or rgb(153,200,204) in RGB space is the tint of cyan. It has hue angle of 184.71 degrees, value = 80 and saturation = 25. #99c8cc can be obtained by mixing 3 colors: 1 drop of cyan, 3 drops of white, 1 drop of black.
Nearest safe hex - #99cccc. Below you can see the block with #99c8cc color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99c8cc to the mixer and play with it.