Hex #99dc4d or rgb(153,220,77) in RGB space is the tint of olive. It has hue angle of 88.11 degrees, value = 86 and saturation = 65. #99dc4d can be obtained by mixing 3 colors: 3 drops of yellow, 4 drops of green, 3 drops of white.
Nearest safe hex - #99cc66. Below you can see the block with #99dc4d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99dc4d to the mixer and play with it.