Hex #55481d or rgb(85,72,29) in RGB space is the tint of khaki. It has hue angle of 46.07 degrees, value = 33 and saturation = 66. #55481d can be obtained by mixing 4 colors: 2 drops of red, 1 drop of blue, 2 drops of green, 1 drop of black.
Nearest safe hex - #663333. Below you can see the block with #55481d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55481d to the mixer and play with it.