The hex color #43b51f is a light color. The web-safe version is Hex
#33CC33. A complementary color is
#BC4AE0. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#76E852, and Hex
#108200 is the 20% darker color. If the color is saturated by 10%, you get
#40BE19. If the color is desaturated by 10%, the color
#46AC25 is obtained.