Hex #404b20 or rgb(64,75,32) in RGB space is the tint of lime. It has hue angle of 75.35 degrees, value = 29 and saturation = 57. #404b20 can be obtained by mixing 4 colors: 2 drops of red, 1 drop of cyan, 2 drops of green, 3 drops of black.
Nearest safe hex - #333333. Below you can see the block with #404b20 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #404b20 to the mixer and play with it.