Hex #5bbcc3 or rgb(91,188,195) in RGB space is the tint of cyan. It has hue angle of 184.04 degrees, value = 76 and saturation = 53. #5bbcc3 can be obtained by mixing 4 colors: 4 drops of blue, 3 drops of cyan, 2 drops of green, 5 drops of white.
Nearest safe hex - #66cccc. Below you can see the block with #5bbcc3 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5bbcc3 to the mixer and play with it.