Hex #a4e780 or rgb(164,231,128) in RGB space is the tint of grass green. It has hue angle of 99.03 degrees, value = 91 and saturation = 45. #a4e780 can be obtained by mixing 4 colors: 4 drops of yellow, 2 drops of cyan, 3 drops of green, 5 drops of white.
Nearest safe hex - #99ff99. Below you can see the block with #a4e780 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #a4e780 to the mixer and play with it.