Hex #55571c or rgb(85,87,28) in RGB space is the tint of yellow. It has hue angle of 62.03 degrees, value = 34 and saturation = 68. #55571c can be obtained by mixing 4 colors: 3 drops of red, 1 drop of cyan, 3 drops of green, 2 drops of black.
Nearest safe hex - #666633. Below you can see the block with #55571c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #55571c to the mixer and play with it.