Hex #78b878 or rgb(120,184,120) in RGB space is the tint of green. It has hue angle of 120.00 degrees, value = 72 and saturation = 35. #78b878 can be obtained by mixing 4 colors: 5 drops of yellow, 5 drops of cyan, 3 drops of white, 4 drops of black.
Nearest safe hex - #66cc66. Below you can see the block with #78b878 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #78b878 to the mixer and play with it.