The hex color #30813c is a dark color. The web-safe version is Hex
#339933. A complementary color is
#CF7EC3. The grayscale version is
#4F4F4F. A 20% lighter version of the original color is
#63B46F, and Hex
#004E09 is the 20% darker color. If the color is saturated by 10%, you get
#2D863A. If the color is desaturated by 10%, the color
#337C3E is obtained.