The hex color #d3dcf4 is a light color. The web-safe version is Hex
#CCCCFF. A complementary color is
#2C230B. The grayscale version is
#E1E1E1. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A0A9C1 is the 20% darker color. If the color is saturated by 10%, you get
#D2DCF6. If the color is desaturated by 10%, the color
#D4DDF2 is obtained.