Hex #aacfd5 or rgb(170,207,213) in RGB space is the tint of bluish cian. It has hue angle of 188.37 degrees, value = 84 and saturation = 20. #aacfd5 can be obtained by mixing 3 colors: 1 drop of red, 2 drops of cyan, 3 drops of white.
Nearest safe hex - #99cccc. Below you can see the block with #aacfd5 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #aacfd5 to the mixer and play with it.