Hex #406400 or rgb(64,100,0) in RGB space is the tint of lime. It has hue angle of 81.60 degrees, value = 39 and saturation = 100. #406400 can be obtained by mixing 4 colors: 2 drops of yellow, 1 drop of red, 4 drops of green, 5 drops of black.
Nearest safe hex - #336600. Below you can see the block with #406400 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #406400 to the mixer and play with it.