The hex color #c9e563 is a light color. The web-safe version is Hex
#CCCC66. A complementary color is
#361A9C. The grayscale version is
#B0B0B0. A 20% lighter version of the original color is
#FCFF96, and Hex
#96B230 is the 20% darker color. If the color is saturated by 10%, you get
#CBEA5B. If the color is desaturated by 10%, the color
#C7E06B is obtained.