Hex #b1e29d or rgb(177,226,157) in RGB space is the tint of grass green. It has hue angle of 102.61 degrees, value = 89 and saturation = 31. #b1e29d can be obtained by mixing 4 colors: 4 drops of yellow, 3 drops of cyan, 5 drops of white, 1 drop of black.
Nearest safe hex - #99cc99. Below you can see the block with #b1e29d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #b1e29d to the mixer and play with it.