Pastel colors refer to a group of soft, muted shades that are typically associated with light and delicate hues. These colors often include pale blues, greens, pinks, purples, yellows, and grays, which evoke feelings of calmness, tranquility, and serenity. Pastel colors are commonly used in artwork, fashion, home decor, and graphic design to create a gentle, soothing atmosphere or mood.