Hex #99da33 or rgb(153,218,51) in RGB space is the tint of olive. It has hue angle of 83.35 degrees, value = 85 and saturation = 77. #99da33 can be obtained by mixing 3 colors: 2 drops of yellow, 2 drops of green, 1 drop of white.
Nearest safe hex - #99cc33. Below you can see the block with #99da33 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99da33 to the mixer and play with it.