The hex color #a9c23d is a light color. The web-safe version is Hex
#99CC33. A complementary color is
#563DC2. The grayscale version is
#8D8D8D. A 20% lighter version of the original color is
#DCF570, and Hex
#768F0A is the 20% darker color. If the color is saturated by 10%, you get
#ACC735. If the color is desaturated by 10%, the color
#A6BD45 is obtained.