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Sunlight has energetic radiations like ultraviolet that exposed to it for specific time limit causes making vitamin D and bone in body. On the other hand, prolonged exposure to ultraviolet energetic irradiations available in sunlight could lead to irremediable damages such as eye and skin diseases for human beings. In this research, it is tried to create durable design using photochromic dyes sensitive to light and printing conventional process in order to safety against ultraviolet utilizing coloured diversity. To do this, polyester fabrics were put under printing treatment and printed samples were exposed to different irradiations such as sunlight, fluorescent, and D65. Finally, coloured changes were measured and compared with each other by evaluating monochromatic compounds amounts (red, blue, and yellow) of each printed sample and under mentioned irradiations. One of the findings of research is durable and effective protective alarm against ultraviolet through created coloured diversity for child’s garment that was successfully obtained by conducting this research.