Hex #8f8c40 or rgb(143,140,64) in RGB space is the tint of yellow. It has hue angle of 57.72 degrees, value = 56 and saturation = 55. #8f8c40 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of magenta, 2 drops of blue, 5 drops of green.
Nearest safe hex - #999933. Below you can see the block with #8f8c40 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8f8c40 to the mixer and play with it.