Hex #55571d or rgb(85,87,29) in RGB space is the tint of yellow. It has hue angle of 62.07 degrees, value = 34 and saturation = 67. #55571d can be obtained by mixing 4 colors: 4 drops of red, 2 drops of blue, 5 drops of green, 1 drop of black.
Nearest safe hex - #666633. Below you can see the block with #55571d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55571d to the mixer and play with it.