Hex #666d89 or rgb(102,109,137) in RGB space is the tint of blue violet. It has hue angle of 228.00 degrees, value = 54 and saturation = 26. #666d89 can be obtained by mixing 4 colors: 4 drops of magenta, 1 drop of blue, 2 drops of cyan, 3 drops of green.
Nearest safe hex - #666699. Below you can see the block with #666d89 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #666d89 to the mixer and play with it.