Hex #bfbf55 or rgb(191,191,85) in RGB space is the tint of yellow. It has hue angle of 60.00 degrees, value = 75 and saturation = 55. #bfbf55 can be obtained by mixing 4 colors: 4 drops of yellow, 1 drop of blue, 2 drops of white, 1 drop of black.
Nearest safe hex - #cccc66. Below you can see the block with #bfbf55 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #bfbf55 to the mixer and play with it.