The hex color #20724f is a dark color. The web-safe version is Hex
#336666. A complementary color is
#DF8DB0. The grayscale version is
#4B4B4B. A 20% lighter version of the original color is
#53A582, and Hex
#003F1C is the 20% darker color. If the color is saturated by 10%, you get
#1C764F. If the color is desaturated by 10%, the color
#246E4F is obtained.