The hex color #d3f3e4 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#2C0C1B. The grayscale version is
#E3E3E3. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A0C0B1 is the 20% darker color. If the color is saturated by 10%, you get
#D1F5E4. If the color is desaturated by 10%, the color
#D5F1E4 is obtained.