The hex color #d3f99a is a light color. The web-safe version is Hex
#CCFF99. A complementary color is
#2C0665. The grayscale version is
#CDCDCD. A 20% lighter version of the original color is
#FFFFCD, and Hex
#A0C667 is the 20% darker color. If the color is saturated by 10%, you get
#D4FD95. If the color is desaturated by 10%, the color
#D2F59F is obtained.