Hex #99df55 or rgb(153,223,85) in RGB space is the tint of olive. It has hue angle of 90.43 degrees, value = 87 and saturation = 62. #99df55 can be obtained by mixing 4 colors: 5 drops of yellow, 1 drop of cyan, 5 drops of green, 4 drops of white.
Nearest safe hex - #99cc66. Below you can see the block with #99df55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99df55 to the mixer and play with it.