The hex color #d3d8f5 is a light color. The web-safe version is Hex
#CCCCFF. A complementary color is
#2C270A. The grayscale version is
#E0E0E0. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A0A5C2 is the 20% darker color. If the color is saturated by 10%, you get
#D2D7F7. If the color is desaturated by 10%, the color
#D4D9F3 is obtained.