Hex #5bb4cf or rgb(91,180,207) in RGB space is the tint of bluish cian. It has hue angle of 193.97 degrees, value = 81 and saturation = 56. #5bb4cf can be obtained by mixing 4 colors: 5 drops of blue, 3 drops of cyan, 1 drop of green, 5 drops of white.
Nearest safe hex - #66cccc. Below you can see the block with #5bb4cf color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5bb4cf to the mixer and play with it.