The hex color #78d42f is a light color. The web-safe version is Hex
#66CC33. A complementary color is
#872BD0. The grayscale version is
#7E7E7E. A 20% lighter version of the original color is
#ABFF62, and Hex
#45A100 is the 20% darker color. If the color is saturated by 10%, you get
#77DD27. If the color is desaturated by 10%, the color
#79CB37 is obtained.