Hex #4e9689 or rgb(78,150,137) in RGB space is the tint of greenish cian. It has hue angle of 169.17 degrees, value = 59 and saturation = 48. #4e9689 can be obtained by mixing 4 colors: 1 drop of yellow, 4 drops of cyan, 3 drops of white, 5 drops of black.
Nearest safe hex - #669999. Below you can see the block with #4e9689 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4e9689 to the mixer and play with it.