Hex #669e2e or rgb(102,158,46) in RGB space is the tint of olive. It has hue angle of 90.00 degrees, value = 62 and saturation = 71. #669e2e can be obtained by mixing 4 colors: 5 drops of yellow, 1 drop of red, 4 drops of blue, 5 drops of green.
Nearest safe hex - #669933. Below you can see the block with #669e2e color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669e2e to the mixer and play with it.