Hex #877b00 or rgb(135,123,0) in RGB space is the tint of yellow. It has hue angle of 54.67 degrees, value = 53 and saturation = 100. #877b00 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of red, 5 drops of green, 3 drops of black.
Nearest safe hex - #996600. Below you can see the block with #877b00 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #877b00 to the mixer and play with it.