Hex #5ba4b0 or rgb(91,164,176) in RGB space is the tint of bluish cian. It has hue angle of 188.47 degrees, value = 69 and saturation = 48. #5ba4b0 can be obtained by mixing 4 colors: 1 drop of blue, 4 drops of cyan, 5 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #5ba4b0 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5ba4b0 to the mixer and play with it.