Hex #404415 or rgb(64,68,21) in RGB space is the tint of yellow. It has hue angle of 65.11 degrees, value = 27 and saturation = 69. #404415 can be obtained by mixing 3 colors: 2 drops of yellow, 1 drop of blue, 5 drops of black.
Nearest safe hex - #333300. Below you can see the block with #404415 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #404415 to the mixer and play with it.