Hex #2b391d or rgb(43,57,29) in RGB space is the tint of olive. It has hue angle of 90.00 degrees, value = 22 and saturation = 49. #2b391d can be obtained by mixing 4 colors: 2 drops of red, 2 drops of blue, 3 drops of green, 5 drops of black.
Nearest safe hex - #333333. Below you can see the block with #2b391d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #2b391d to the mixer and play with it.