The hex color #d4fe4f is a light color. The web-safe version is Hex
#CCFF66. A complementary color is
#2B01B0. The grayscale version is
#B6B6B6. A 20% lighter version of the original color is
#FFFF82, and Hex
#A1CB1C is the 20% darker color. If the color is saturated by 10%, you get
#D7FF45. If the color is desaturated by 10%, the color
#D1F759 is obtained.