Hex #604400 or rgb(96,68,0) in RGB space is the tint of khaki. It has hue angle of 42.50 degrees, value = 38 and saturation = 100. #604400 can be obtained by mixing 3 colors: 3 drops of red, 3 drops of green, 2 drops of black.
Nearest safe hex - #663300. Below you can see the block with #604400 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #604400 to the mixer and play with it.