It’s “lilac”, not light purple. Just like it’s “magenta”, not dark pink. Writer and children’s book illustrator Ingrid Sundberg has created a Color Thesaurus – a collection of 12 color charts that list the correct names of all shades.
What about Fear of water? Phobias: xenophobia definition is a bit simplistic; yes 'strangers' but also more towards the fear of foreigners. Usually, used socially and culturally than just 'strangers' but I digress.