Hex #665b6f or rgb(102,91,111) in RGB space is the tint of purple. It has hue angle of 273.00 degrees, value = 44 and saturation = 18. #665b6f can be obtained by mixing 4 colors: 1 drop of red, 2 drops of blue, 3 drops of white, 4 drops of black.
Nearest safe hex - #666666. Below you can see the block with #665b6f color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #665b6f to the mixer and play with it.