The hex color #e3f00d is a light color. The web-safe version is Hex
#CCFF00. A complementary color is
#1C0FF2. The grayscale version is
#A0A0A0. A 20% lighter version of the original color is
#FFFF40, and Hex
#B0BD00 is the 20% darker color. If the color is saturated by 10%, you get
#EAF800. If the color is desaturated by 10%, the color
#DCE81C is obtained.