The hex color #e3f50f is a light color. The web-safe version is Hex
#CCFF00. A complementary color is
#1C0AF0. The grayscale version is
#A2A2A2. A 20% lighter version of the original color is
#FFFF42, and Hex
#B0C200 is the 20% darker color. If the color is saturated by 10%, you get
#E9FD00. If the color is desaturated by 10%, the color
#DDED1E is obtained.