The hex color #e9e4f2 is a light color. The web-safe version is Hex
#FFCCFF. A complementary color is
#161B0D. The grayscale version is
#EAEAEA. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B6B1BF is the 20% darker color. If the color is saturated by 10%, you get
#E9E3F3. If the color is desaturated by 10%, the color
#E9E5F1 is obtained.