Hex #405b2b or rgb(64,91,43) in RGB space is the tint of olive. It has hue angle of 93.75 degrees, value = 36 and saturation = 53. #405b2b can be obtained by mixing 3 colors: 1 drop of magenta, 2 drops of green, 1 drop of black.
Nearest safe hex - #336633. Below you can see the block with #405b2b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #405b2b to the mixer and play with it.