Hex #99e44d or rgb(153,228,77) in RGB space is the tint of olive. It has hue angle of 89.80 degrees, value = 89 and saturation = 66. #99e44d can be obtained by mixing 4 colors: 5 drops of yellow, 2 drops of cyan, 2 drops of green, 1 drop of white.
Nearest safe hex - #99cc66. Below you can see the block with #99e44d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99e44d to the mixer and play with it.