Hex #665c00 or rgb(102,92,0) in RGB space is the tint of yellow. It has hue angle of 54.12 degrees, value = 40 and saturation = 100. #665c00 can be obtained by mixing 4 colors: 2 drops of yellow, 4 drops of red, 5 drops of green, 4 drops of black.
Nearest safe hex - #666600. Below you can see the block with #665c00 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665c00 to the mixer and play with it.