The hex color #e1e9f5 is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#1E160A. The grayscale version is
#EAEAEA. A 20% lighter version of the original color is
#FFFFFF, and Hex
#AEB6C2 is the 20% darker color. If the color is saturated by 10%, you get
#E0E9F6. If the color is desaturated by 10%, the color
#E2E9F4 is obtained.