Hex #66676f or rgb(102,103,111) in RGB space is the tint of violet. It has hue angle of 233.33 degrees, value = 44 and saturation = 8. #66676f can be obtained by mixing 4 colors: 4 drops of magenta, 1 drop of blue, 1 drop of cyan, 4 drops of green.
Nearest safe hex - #666666. Below you can see the block with #66676f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66676f to the mixer and play with it.