Hex #669e22 or rgb(102,158,34) in RGB space is the tint of olive. It has hue angle of 87.10 degrees, value = 62 and saturation = 78. #669e22 can be obtained by mixing 4 colors: 3 drops of yellow, 1 drop of red, 2 drops of blue, 4 drops of green.
Nearest safe hex - #669933. Below you can see the block with #669e22 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #669e22 to the mixer and play with it.