The purpose of creating a Teal and Magenta Simple Happy Birthday Poster is to provide a colorful and visually appealing way to celebrate someone's birthday. This poster can be used to convey birthday wishes, sentiments of joy and happiness, and to create a festive environment for the occasion. The colors chosen for the poster are bright and cheerful, reflecting the mood of the celebration. Overall, the poster aims to bring a smile to the recipient's face and create a memorable moment for their special day.