Hex #99c455 or rgb(153,196,85) in RGB space is the tint of olive. It has hue angle of 83.24 degrees, value = 77 and saturation = 57. #99c455 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of blue, 1 drop of green, 1 drop of white.
Nearest safe hex - #99cc66. Below you can see the block with #99c455 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99c455 to the mixer and play with it.