Hex #666477 or rgb(102,100,119) in RGB space is the tint of violet. It has hue angle of 246.32 degrees, value = 47 and saturation = 16. #666477 can be obtained by mixing 4 colors: 1 drop of magenta, 1 drop of cyan, 3 drops of white, 5 drops of black.
Nearest safe hex - #666666. Below you can see the block with #666477 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666477 to the mixer and play with it.