The hex color #18db4d is a light color. The web-safe version is Hex
#00CC66. A complementary color is
#E724B2. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#4BFF80, and Hex
#00A81A is the 20% darker color. If the color is saturated by 10%, you get
#10E64A. If the color is desaturated by 10%, the color
#20D050 is obtained.