Hex #666b4d or rgb(102,107,77) in RGB space is the tint of lime. It has hue angle of 70.00 degrees, value = 42 and saturation = 28. #666b4d can be obtained by mixing 4 colors: 4 drops of red, 3 drops of cyan, 2 drops of green, 1 drop of black.
Nearest safe hex - #666666. Below you can see the block with #666b4d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666b4d to the mixer and play with it.