Hex #4d8e80 or rgb(77,142,128) in RGB space is the tint of greenish cian. It has hue angle of 167.08 degrees, value = 56 and saturation = 46. #4d8e80 can be obtained by mixing 4 colors: 2 drops of cyan, 1 drop of green, 3 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #4d8e80 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4d8e80 to the mixer and play with it.