Hex #4ec255 or rgb(78,194,85) in RGB space is the tint of green. It has hue angle of 123.62 degrees, value = 76 and saturation = 60. #4ec255 can be obtained by mixing 4 colors: 4 drops of yellow, 2 drops of blue, 3 drops of cyan, 4 drops of green.
Nearest safe hex - #66cc66. Below you can see the block with #4ec255 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4ec255 to the mixer and play with it.