The hex color #d4f5d4 is a light color. The web-safe version is Hex
#CCFFCC. A complementary color is
#2B0A2B. The grayscale version is
#DFDFDF. A 20% lighter version of the original color is
#FFFFFF, and Hex
#A1C2A1 is the 20% darker color. If the color is saturated by 10%, you get
#D3F7D3. If the color is desaturated by 10%, the color
#D5F3D5 is obtained.