Hex #5b8db0 or rgb(91,141,176) in RGB space is the tint of blue. It has hue angle of 204.71 degrees, value = 69 and saturation = 48. #5b8db0 can be obtained by mixing 4 colors: 3 drops of red, 4 drops of blue, 5 drops of cyan, 2 drops of white.
Nearest safe hex - #669999. Below you can see the block with #5b8db0 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b8db0 to the mixer and play with it.