Hex #5bbacf or rgb(91,186,207) in RGB space is the tint of bluish cian. It has hue angle of 190.86 degrees, value = 81 and saturation = 56. #5bbacf can be obtained by mixing 4 colors: 2 drops of blue, 5 drops of cyan, 5 drops of white, 2 drops of black.
Nearest safe hex - #66cccc. Below you can see the block with #5bbacf color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5bbacf to the mixer and play with it.