Hex #404d20 or rgb(64,77,32) in RGB space is the tint of lime. It has hue angle of 77.33 degrees, value = 30 and saturation = 58. #404d20 can be obtained by mixing 4 colors: 1 drop of red, 2 drops of green, 1 drop of white, 4 drops of black.
Nearest safe hex - #336633. Below you can see the block with #404d20 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #404d20 to the mixer and play with it.