Keeping it conventional, here's wishing you a very Happy Holi!
Wishing in Hindi just makes the celebrations even more personal than it is- होली की शुभकामनाएं
Saying Happy Holi in Korean- Haengboghada, for a fulfilling K-pop, K-drama moment.
Sharing Holi greetings in Spanish can simply be translated to- Feliz Holi
Sending Holi wishes in French- Heureux Holi
Wishing a very Happy Holi in Italian can be written as- Buon viaggio
Wishing happy holi in German- Frohes Holi