The hex color #c9d2ef is a light color. The web-safe version is Hex
#CCCCFF. A complementary color is
#362D10. The grayscale version is
#D9D9D9. A 20% lighter version of the original color is
#FCFFFF, and Hex
#969FBC is the 20% darker color. If the color is saturated by 10%, you get
#C7D1F1. If the color is desaturated by 10%, the color
#CBD3ED is obtained.