The hex color #a9fa1d is a light color. The web-safe version is Hex
#99FF33. A complementary color is
#5605E2. The grayscale version is
#959595. A 20% lighter version of the original color is
#DCFF50, and Hex
#76C700 is the 20% darker color. If the color is saturated by 10%, you get
#ABFF11. If the color is desaturated by 10%, the color
#A7F029 is obtained.