The hex color #c9dded is a light color. The web-safe version is Hex
#CCCCFF. A complementary color is
#362212. The grayscale version is
#DCDCDC. A 20% lighter version of the original color is
#FCFFFF, and Hex
#96AABA is the 20% darker color. If the color is saturated by 10%, you get
#C7DDEF. If the color is desaturated by 10%, the color
#CBDDEB is obtained.