Hex #99cedd or rgb(153,206,221) in RGB space is the tint of bluish cian. It has hue angle of 193.24 degrees, value = 87 and saturation = 31. #99cedd can be obtained by mixing 4 colors: 1 drop of red, 1 drop of blue, 3 drops of cyan, 5 drops of white.
Nearest safe hex - #99cccc. Below you can see the block with #99cedd color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99cedd to the mixer and play with it.