Hex #78a93c or rgb(120,169,60) in RGB space is the tint of olive. It has hue angle of 86.97 degrees, value = 66 and saturation = 64. #78a93c can be obtained by mixing 4 colors: 4 drops of yellow, 5 drops of green, 4 drops of white, 4 drops of black.
Nearest safe hex - #669933. Below you can see the block with #78a93c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #78a93c to the mixer and play with it.