The hex color #00ff3f is a light color. The web-safe version is Hex
#00FF33. A complementary color is
#FF00C0. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#33FF72, and Hex
#00CC0C is the 20% darker color. If the color is saturated by 10%, you get
#00FF3B. If the color is desaturated by 10%, the color
#0BF043 is obtained.