Hex #66475b or rgb(102,71,91) in RGB space is the tint of crimson. It has hue angle of 321.29 degrees, value = 40 and saturation = 30. #66475b can be obtained by mixing 4 colors: 3 drops of yellow, 3 drops of magenta, 5 drops of blue, 4 drops of black.
Nearest safe hex - #663366. Below you can see the block with #66475b color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #66475b to the mixer and play with it.