Hex #99c7dd or rgb(153,199,221) in RGB space is the tint of bluish cian. It has hue angle of 199.41 degrees, value = 87 and saturation = 31. #99c7dd can be obtained by mixing 4 colors: 1 drop of magenta, 3 drops of cyan, 5 drops of white, 1 drop of black.
Nearest safe hex - #99cccc. Below you can see the block with #99c7dd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99c7dd to the mixer and play with it.