The hex color #4f7c5c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#B083A3. The grayscale version is
#626262. A 20% lighter version of the original color is
#82AF8F, and Hex
#1C4929 is the 20% darker color. If the color is saturated by 10%, you get
#4D7F5B. If the color is desaturated by 10%, the color
#51795D is obtained.