Hex #99e091 or rgb(153,224,145) in RGB space is the tint of green. It has hue angle of 113.92 degrees, value = 88 and saturation = 35. #99e091 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of blue, 3 drops of cyan, 2 drops of white.
Nearest safe hex - #99cc99. Below you can see the block with #99e091 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #99e091 to the mixer and play with it.