Hex #666c22 or rgb(102,108,34) in RGB space is the tint of yellow. It has hue angle of 64.86 degrees, value = 42 and saturation = 69. #666c22 can be obtained by mixing 4 colors: 3 drops of yellow, 3 drops of magenta, 5 drops of green, 4 drops of black.
Nearest safe hex - #666633. Below you can see the block with #666c22 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666c22 to the mixer and play with it.