Hex #99b4c4 or rgb(153,180,196) in RGB space is the tint of bluish cian. It has hue angle of 202.33 degrees, value = 77 and saturation = 22. #99b4c4 can be obtained by mixing 3 colors: 1 drop of yellow, 4 drops of blue, 5 drops of white.
Nearest safe hex - #99cccc. Below you can see the block with #99b4c4 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99b4c4 to the mixer and play with it.