Hex #99e066 or rgb(153,224,102) in RGB space is the tint of olive. It has hue angle of 94.92 degrees, value = 88 and saturation = 54. #99e066 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of cyan, 5 drops of green, 5 drops of white.
Nearest safe hex - #99cc66. Below you can see the block with #99e066 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99e066 to the mixer and play with it.