The hex color #c5dd1f is a light color. The web-safe version is Hex
#CCCC33. A complementary color is
#3A22E0. The grayscale version is
#969696. A 20% lighter version of the original color is
#F8FF52, and Hex
#92AA00 is the 20% darker color. If the color is saturated by 10%, you get
#CAE413. If the color is desaturated by 10%, the color
#C0D62B is obtained.