Hex #80b740 or rgb(128,183,64) in RGB space is the tint of olive. It has hue angle of 87.73 degrees, value = 72 and saturation = 65. #80b740 can be obtained by mixing 4 colors: 3 drops of yellow, 4 drops of green, 3 drops of white, 2 drops of black.
Nearest safe hex - #99cc33. Below you can see the block with #80b740 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #80b740 to the mixer and play with it.