Hex #66853c or rgb(102,133,60) in RGB space is the tint of olive. It has hue angle of 85.48 degrees, value = 52 and saturation = 55. #66853c can be obtained by mixing 4 colors: 4 drops of yellow, 2 drops of blue, 1 drop of cyan, 3 drops of black.
Nearest safe hex - #669933. Below you can see the block with #66853c color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66853c to the mixer and play with it.