Hex #4ea789 or rgb(78,167,137) in RGB space is the tint of greenish cian. It has hue angle of 159.78 degrees, value = 65 and saturation = 53. #4ea789 can be obtained by mixing 4 colors: 2 drops of yellow, 5 drops of cyan, 2 drops of white, 4 drops of black.
Nearest safe hex - #669999. Below you can see the block with #4ea789 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4ea789 to the mixer and play with it.