Rainbow coloring pages are such fun for children! Kids love to draw and paint rainbows as their colorful yet simple appearance makes it very easy to draw them, even for little kids. It’s a great way for them to learn and practice all of the colors. This optical phenomenon called the rainbow is caused by sunlight reflecting from water droplets present in the Earth’s atmosphere. The human eye can perceive seven main colors. ROY-G-BIV is a good way to remember them. Red, Orange, Yellow, Green, Blue, Indigo, Violet. Here is a collection of some of the best rainbow coloring pages that are suitable for kids of all ages including toddlers, preschoolers, and kindergarteners. Check them out to pick the best ones for your kids.