The hex color #e4e9f2 is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#1B160D. The grayscale version is
#EAEAEA. A 20% lighter version of the original color is
#FFFFFF, and Hex
#B1B6BF is the 20% darker color. If the color is saturated by 10%, you get
#E3E9F3. If the color is desaturated by 10%, the color
#E5E9F1 is obtained.