The hex color #01873f is a dark color. The web-safe version is Hex
#009933. A complementary color is
#FE78C0. The grayscale version is
#424242. A 20% lighter version of the original color is
#34BA72, and Hex
#00540C is the 20% darker color. If the color is saturated by 10%, you get
#008E3F. If the color is desaturated by 10%, the color
#08803F is obtained.