Birthday Colorful Retro Circle Pattern Square Paper Coaster

Celebrate with this cheerful illustration featuring a vibrant array of hand-painted concentric circles in a joyful palette of pink, teal, purple, yellow, and coral, radiating outward in a festive, retro-inspired pattern. Playful polka dots and scattered confetti-like accents fill the spaces between each circular ring, creating a fun, energetic composition perfect for any celebration. At the center, bold typography reading 'Happy Birthday' in teal and coral stands out beautifully, framed by whimsical dotted borders and delicate floral bursts. This lively, modern design radiates joy and festivity, making it perfect for those who love bold, colorful celebrations, ideal for birthday cards, apparel, party décor, and cheerful gifts.