Hex #4ec53b or rgb(78,197,59) in RGB space is the tint of grass green. It has hue angle of 111.74 degrees, value = 77 and saturation = 70. #4ec53b can be obtained by mixing 4 colors: 4 drops of yellow, 3 drops of cyan, 5 drops of green, 1 drop of black.
Nearest safe hex - #66cc33. Below you can see the block with #4ec53b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #4ec53b to the mixer and play with it.