gray-blue and blue

black and blue, black and brown, black and gray, black and gray-blue, blue and black, blue and brown, blue and gray, blue and gray-blue, brown and black, brown and blue, brown and gray, brown and gray-blue, gray and black, gray and blue, gray and brown, gray and gray-blue, gray-blue and black, gray-blue and blue, gray-blue and brown, gray-blue and gray, shades of blue.