The hex color #2b991c is a dark color. The web-safe version is Hex
#339933. A complementary color is
#D466E3. The grayscale version is
#4B4B4B. A 20% lighter version of the original color is
#5ECC4F, and Hex
#006600 is the 20% darker color. If the color is saturated by 10%, you get
#28A117. If the color is desaturated by 10%, the color
#2E9121 is obtained.