The hex color #55cf4c is a light color. The web-safe version is Hex
#66CC33. A complementary color is
#AA30B3. The grayscale version is
#7B7B7B. A 20% lighter version of the original color is
#88FF7F, and Hex
#229C19 is the 20% darker color. If the color is saturated by 10%, you get
#51D747. If the color is desaturated by 10%, the color
#59C751 is obtained.