Hex #555726 or rgb(85,87,38) in RGB space is the tint of yellow. It has hue angle of 62.45 degrees, value = 34 and saturation = 56. #555726 can be obtained by mixing 4 colors: 1 drop of yellow, 2 drops of magenta, 3 drops of green, 3 drops of black.
Nearest safe hex - #666633. Below you can see the block with #555726 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #555726 to the mixer and play with it.