Hex #80ac5b or rgb(128,172,91) in RGB space is the tint of olive. It has hue angle of 92.59 degrees, value = 67 and saturation = 47. #80ac5b can be obtained by mixing 4 colors: 5 drops of yellow, 3 drops of cyan, 2 drops of white, 4 drops of black.
Nearest safe hex - #999966. Below you can see the block with #80ac5b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #80ac5b to the mixer and play with it.