The hex color #c9fd7f is a light color. The web-safe version is Hex
#CCFF66. A complementary color is
#360280. The grayscale version is
#C2C2C2. A 20% lighter version of the original color is
#FCFFB2, and Hex
#96CA4C is the 20% darker color. If the color is saturated by 10%, you get
#CAFF78. If the color is desaturated by 10%, the color
#C8F786 is obtained.