Hex #504b20 or rgb(80,75,32) in RGB space is the tint of yellow. It has hue angle of 53.75 degrees, value = 31 and saturation = 60. #504b20 can be obtained by mixing 4 colors: 5 drops of red, 2 drops of cyan, 4 drops of green, 5 drops of black.
Nearest safe hex - #663333. Below you can see the block with #504b20 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #504b20 to the mixer and play with it.