Hex #554b22 or rgb(85,75,34) in RGB space is the tint of khaki. It has hue angle of 48.24 degrees, value = 33 and saturation = 60. #554b22 can be obtained by mixing 4 colors: 5 drops of red, 3 drops of blue, 5 drops of green, 2 drops of black.
Nearest safe hex - #663333. Below you can see the block with #554b22 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #554b22 to the mixer and play with it.