The hex color #28704c is a dark color. The web-safe version is Hex
#336633. A complementary color is
#D78FB3. The grayscale version is
#4C4C4C. A 20% lighter version of the original color is
#5BA37F, and Hex
#003D19 is the 20% darker color. If the color is saturated by 10%, you get
#24744C. If the color is desaturated by 10%, the color
#2C6C4C is obtained.