The hex color #599f2c is a dark color. The web-safe version is Hex
#669933. A complementary color is
#A660D3. The grayscale version is
#616161. A 20% lighter version of the original color is
#8CD25F, and Hex
#266C00 is the 20% darker color. If the color is saturated by 10%, you get
#58A527. If the color is desaturated by 10%, the color
#5A9931 is obtained.