The hex color #d5f3d3 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#2A0C2C. The grayscale version is
#DEDEDE. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A2C0A0 is the 20% darker color. If the color is saturated by 10%, you get
#D4F5D2. If the color is desaturated by 10%, the color
#D6F1D4 is obtained.