The hex color #81ab4c is a light color. The web-safe version is Hex
#999933. A complementary color is
#7E54B3. The grayscale version is
#7D7D7D. A 20% lighter version of the original color is
#B4DE7F, and Hex
#4E7819 is the 20% darker color. If the color is saturated by 10%, you get
#81B047. If the color is desaturated by 10%, the color
#81A651 is obtained.