Hex #5b9692 or rgb(91,150,146) in RGB space is the tint of cyan. It has hue angle of 175.93 degrees, value = 59 and saturation = 39. #5b9692 can be obtained by mixing 4 colors: 1 drop of magenta, 5 drops of blue, 4 drops of green, 4 drops of white.
Nearest safe hex - #669999. Below you can see the block with #5b9692 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #5b9692 to the mixer and play with it.