The hex color #81d65a is a light color. The web-safe version is Hex
#99CC66. A complementary color is
#7E29A5. The grayscale version is
#909090. A 20% lighter version of the original color is
#B4FF8D, and Hex
#4EA327 is the 20% darker color. If the color is saturated by 10%, you get
#7FDD55. If the color is desaturated by 10%, the color
#83CF5F is obtained.