Hex #a4a137 or rgb(164,161,55) in RGB space is the tint of yellow. It has hue angle of 58.35 degrees, value = 64 and saturation = 66. #a4a137 can be obtained by mixing 4 colors: 5 drops of yellow, 4 drops of red, 3 drops of cyan, 2 drops of green.
Nearest safe hex - #999933. Below you can see the block with #a4a137 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #a4a137 to the mixer and play with it.