The hex color #d3d9e3 is a light color. The web-safe version is Hex
#CCCCCC. A complementary color is
#2C261C. The grayscale version is
#DADADA. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A0A6B0 is the 20% darker color. If the color is saturated by 10%, you get
#D2D9E4. If the color is desaturated by 10%, the color
#D4D9E2 is obtained.