Hex #50a28f or rgb(80,162,143) in RGB space is the tint of greenish cian. It has hue angle of 166.10 degrees, value = 64 and saturation = 51. #50a28f can be obtained by mixing 4 colors: 4 drops of cyan, 2 drops of green, 5 drops of white, 5 drops of black.
Nearest safe hex - #669999. Below you can see the block with #50a28f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #50a28f to the mixer and play with it.