The hex color #d3f3d9 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#2C0C26. The grayscale version is
#E0E0E0. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A0C0A6 is the 20% darker color. If the color is saturated by 10%, you get
#D2F5D8. If the color is desaturated by 10%, the color
#D4F1DA is obtained.