Hex #78b36e or rgb(120,179,110) in RGB space is the tint of grass green. It has hue angle of 111.30 degrees, value = 70 and saturation = 39. #78b36e can be obtained by mixing 4 colors: 4 drops of yellow, 5 drops of blue, 4 drops of green, 4 drops of white.
Nearest safe hex - #66cc66. Below you can see the block with #78b36e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #78b36e to the mixer and play with it.