Hex #553a68 or rgb(85,58,104) in RGB space is the tint of purple. It has hue angle of 275.22 degrees, value = 41 and saturation = 44. #553a68 can be obtained by mixing 4 colors: 3 drops of red, 4 drops of blue, 1 drop of cyan, 1 drop of black.
Nearest safe hex - #663366. Below you can see the block with #553a68 color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #553a68 to the mixer and play with it.