The hex color #18d13f is a light color. The web-safe version is Hex
#00CC33. A complementary color is
#E72EC0. The grayscale version is
#636363. A 20% lighter version of the original color is
#4BFF72, and Hex
#009E0C is the 20% darker color. If the color is saturated by 10%, you get
#11DC3B. If the color is desaturated by 10%, the color
#1FC643 is obtained.