The hex color #cdef2f is a light color. The web-safe version is Hex
#CCFF33. A complementary color is
#3210D0. The grayscale version is
#A4A4A4. A 20% lighter version of the original color is
#FFFF62, and Hex
#9ABC00 is the 20% darker color. If the color is saturated by 10%, you get
#D1F723. If the color is desaturated by 10%, the color
#C9E73B is obtained.