The hex color #d4e8f6 is a light color. The web-safe version is Hex
#CCFFFF. A complementary color is
#2B1709. The grayscale version is
#E6E6E6. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A1B5C3 is the 20% darker color. If the color is saturated by 10%, you get
#D2E8F8. If the color is desaturated by 10%, the color
#D6E8F4 is obtained.