Hex #5b8486 or rgb(91,132,134) in RGB space is the tint of cyan. It has hue angle of 182.79 degrees, value = 53 and saturation = 32. #5b8486 can be obtained by mixing 3 colors: 5 drops of magenta, 4 drops of cyan, 5 drops of green.
Nearest safe hex - #669999. Below you can see the block with #5b8486 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b8486 to the mixer and play with it.