The hex color #d3f8d3 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#2C072C. The grayscale version is
#DFDFDF. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A0C5A0 is the 20% darker color. If the color is saturated by 10%, you get
#D2FAD2. If the color is desaturated by 10%, the color
#D4F6D4 is obtained.