Hex #78ba64 or rgb(120,186,100) in RGB space is the tint of grass green. It has hue angle of 106.05 degrees, value = 73 and saturation = 46. #78ba64 can be obtained by mixing 4 colors: 4 drops of yellow, 4 drops of blue, 5 drops of green, 4 drops of white.
Nearest safe hex - #66cc66. Below you can see the block with #78ba64 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #78ba64 to the mixer and play with it.