Hex #78aa4b or rgb(120,170,75) in RGB space is the tint of olive. It has hue angle of 91.58 degrees, value = 67 and saturation = 56. #78aa4b can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of green, 5 drops of white, 4 drops of black.
Nearest safe hex - #669933. Below you can see the block with #78aa4b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #78aa4b to the mixer and play with it.