Hex #8f9840 or rgb(143,152,64) in RGB space is the tint of yellow. It has hue angle of 66.14 degrees, value = 60 and saturation = 58. #8f9840 can be obtained by mixing 4 colors: 4 drops of yellow, 5 drops of red, 4 drops of cyan, 3 drops of green.
Nearest safe hex - #999933. Below you can see the block with #8f9840 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #8f9840 to the mixer and play with it.