The hex color #c8f55e is a light color. The web-safe version is Hex
#CCFF66. A complementary color is
#370AA1. The grayscale version is
#B4B4B4. A 20% lighter version of the original color is
#FBFF91, and Hex
#95C22B is the 20% darker color. If the color is saturated by 10%, you get
#CAFC55. If the color is desaturated by 10%, the color
#C6EE67 is obtained.