Hex #2b661d or rgb(43,102,29) in RGB space is the tint of grass green. It has hue angle of 108.49 degrees, value = 40 and saturation = 72. #2b661d can be obtained by mixing 4 colors: 1 drop of red, 1 drop of blue, 3 drops of green, 1 drop of black.
Nearest safe hex - #336633. Below you can see the block with #2b661d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b661d to the mixer and play with it.