yellow
"There is no lightest shade of white because white is a shade."
"Alabaster" is the lightest shade.
pumice
I think lavender or lilac is a light shade of purple. Search it up on Google to see if I'm right.
The lightest shade of yellow would be a pale or pastel yellow, often referred to as lemon chiffon or pale yellow. This shade is soft, delicate, and closer to white on the color spectrum.
Isabella or Isabelo is as light as it gets.
hot pink
bumble bee bat
Isabella or Isabelo is as light as it gets.
baby pink
hot pink
The worlds lightest airplane is I believe the ultralight. Now ultralight aircrafts come in many different shapes and sizes but they are the "Family" of the lightest planes. To see what they look like, go to google.com and type in pictures of ultralight planes.