Hex #8ec639 or rgb(142,198,57) in RGB space is the tint of olive. It has hue angle of 83.83 degrees, value = 78 and saturation = 71. #8ec639 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of red, 2 drops of cyan, 2 drops of green.
Nearest safe hex - #99cc33. Below you can see the block with #8ec639 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8ec639 to the mixer and play with it.