Hex #55a42b or rgb(85,164,43) in RGB space is the tint of grass green. It has hue angle of 99.17 degrees, value = 64 and saturation = 74. #55a42b can be obtained by mixing 4 colors: 4 drops of yellow, 2 drops of cyan, 3 drops of green, 3 drops of black.
Nearest safe hex - #669933. Below you can see the block with #55a42b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55a42b to the mixer and play with it.