International Color Day is observed worldwide every March 21. The celebration was proposed in 2008 by the Portuguese Color Association, led by president Maria Joao Durao, and was agreed upon by members from over 30 countries. The date was chosen to coincide with the spring equinox, symbolizing the balance of light and darkness, a concept recognized across cultures. Activities during this day include arts exhibitions, contests focused on color and light design, and free workshops for both adults and children that explore the use of color and light. This observance highlights the significant role color plays in shaping human perception and reality.