The hex color #258a2c is a dark color. The web-safe version is Hex
#339933. A complementary color is
#DA75D3. The grayscale version is
#494949. A 20% lighter version of the original color is
#58BD5F, and Hex
#005700 is the 20% darker color. If the color is saturated by 10%, you get
#219129. If the color is desaturated by 10%, the color
#29842F is obtained.