The hex color #81d75f is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#7E28A0. The grayscale version is
#929292. A 20% lighter version of the original color is
#B4FF92, and Hex
#4EA42C is the 20% darker color. If the color is saturated by 10%, you get
#7FDE5A. If the color is desaturated by 10%, the color
#83D064 is obtained.