Hex #55ba39 or rgb(85,186,57) in RGB space is the tint of grass green. It has hue angle of 106.98 degrees, value = 73 and saturation = 69. #55ba39 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of red, 2 drops of cyan, 4 drops of green.
Nearest safe hex - #66cc33. Below you can see the block with #55ba39 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55ba39 to the mixer and play with it.