Hex #665f00 or rgb(102,95,0) in RGB space is the tint of yellow. It has hue angle of 55.88 degrees, value = 40 and saturation = 100. #665f00 can be obtained by mixing 2 colors: 2 drops of yellow, 3 drops of black.
Nearest safe hex - #666600. Below you can see the block with #665f00 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665f00 to the mixer and play with it.