The hex color #d4fe6f is a light color. The web-safe version is Hex
#CCFF66. A complementary color is
#2B0190. The grayscale version is
#C0C0C0. A 20% lighter version of the original color is
#FFFFA2, and Hex
#A1CB3C is the 20% darker color. If the color is saturated by 10%, you get
#D6FF67. If the color is desaturated by 10%, the color
#D2F877 is obtained.