Hex #555013 or rgb(85,80,19) in RGB space is the tint of yellow. It has hue angle of 55.45 degrees, value = 33 and saturation = 78. #555013 can be obtained by mixing 4 colors: 2 drops of red, 1 drop of magenta, 4 drops of green, 2 drops of black.
Nearest safe hex - #666600. Below you can see the block with #555013 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #555013 to the mixer and play with it.