The hex color #c9f57a is a light color. The web-safe version is Hex
#CCFF66. A complementary color is
#360A85. The grayscale version is
#BDBDBD. A 20% lighter version of the original color is
#FCFFAD, and Hex
#96C247 is the 20% darker color. If the color is saturated by 10%, you get
#CAFB73. If the color is desaturated by 10%, the color
#C8EF81 is obtained.