Hex #4ec55c or rgb(78,197,92) in RGB space is the tint of green. It has hue angle of 127.06 degrees, value = 77 and saturation = 60. #4ec55c can be obtained by mixing 4 colors: 3 drops of yellow, 1 drop of magenta, 4 drops of cyan, 5 drops of green.
Nearest safe hex - #66cc66. Below you can see the block with #4ec55c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4ec55c to the mixer and play with it.