The hex color #30866c is a dark color. The web-safe version is Hex
#339966. A complementary color is
#CF7993. The grayscale version is
#616161. A 20% lighter version of the original color is
#63B99F, and Hex
#005339 is the 20% darker color. If the color is saturated by 10%, you get
#2B8A6D. If the color is desaturated by 10%, the color
#35826B is obtained.