Hex #789a4b or rgb(120,154,75) in RGB space is the tint of olive. It has hue angle of 85.82 degrees, value = 60 and saturation = 51. #789a4b can be obtained by mixing 4 colors: 3 drops of yellow, 5 drops of red, 5 drops of cyan, 4 drops of green.
Nearest safe hex - #669933. Below you can see the block with #789a4b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #789a4b to the mixer and play with it.