Hex #554315 or rgb(85,67,21) in RGB space is the tint of khaki. It has hue angle of 43.13 degrees, value = 33 and saturation = 75. #554315 can be obtained by mixing 4 colors: 3 drops of red, 3 drops of green, 1 drop of white, 5 drops of black.
Nearest safe hex - #663300. Below you can see the block with #554315 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #554315 to the mixer and play with it.