Hex #99b88e or rgb(153,184,142) in RGB space is the tint of grass green. It has hue angle of 104.29 degrees, value = 72 and saturation = 23. #99b88e can be obtained by mixing 4 colors: 4 drops of yellow, 5 drops of blue, 1 drop of green, 5 drops of white.
Nearest safe hex - #99cc99. Below you can see the block with #99b88e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99b88e to the mixer and play with it.