Hex #66a733 or rgb(102,167,51) in RGB space is the tint of olive. It has hue angle of 93.62 degrees, value = 65 and saturation = 69. #66a733 can be obtained by mixing 4 colors: 1 drop of yellow, 1 drop of red, 1 drop of cyan, 2 drops of green.
Nearest safe hex - #669933. Below you can see the block with #66a733 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66a733 to the mixer and play with it.