Hex #508885 or rgb(80,136,133) in RGB space is the tint of cyan. It has hue angle of 176.79 degrees, value = 53 and saturation = 41. #508885 can be obtained by mixing 4 colors: 5 drops of blue, 3 drops of green, 5 drops of white, 3 drops of black.
Nearest safe hex - #669999. Below you can see the block with #508885 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #508885 to the mixer and play with it.