The hex color #56b51f is a light color. The web-safe version is Hex
#66CC33. A complementary color is
#A94AE0. The grayscale version is
#636363. A 20% lighter version of the original color is
#89E852, and Hex
#238200 is the 20% darker color. If the color is saturated by 10%, you get
#55BD18. If the color is desaturated by 10%, the color
#57AD26 is obtained.