The hex color #e6fd1d is a light color. The web-safe version is Hex
#FFFF33. A complementary color is
#1902E2. The grayscale version is
#ABABAB. A 20% lighter version of the original color is
#FFFF50, and Hex
#B3CA00 is the 20% darker color. If the color is saturated by 10%, you get
#ECFF0F. If the color is desaturated by 10%, the color
#E0F52B is obtained.