There’s a wide variety of photographic color meter light calibration charts, see https://www.amazon.com/gp/bestsellers/electronics/3109910011/ref=pd_zg_hrsr_ele

There’s a wide variety of photographic color meter light calibration charts, see https://www.amazon.com/gp/bestsellers/electronics/3109910011/ref=pd_zg_hrsr_electronics https://www.amazon.com/gp/bestsellers/electronics/3109910011... My favorites are from Datacolor or X-Rite.