The hex color #C5E504 is a light color. The web-safe version is Hex
#CCCC00. A complementary color is
#3A1AFB. The grayscale version is
#8F8F8F. A 20% lighter version of the original color is
#F8FF37, and Hex
#92B200 is the 20% darker color. If the color is saturated by 10%, you get
#CAEE00. If the color is desaturated by 10%, the color
#C0DC12 is obtained.