The hex color #4c726f is a dark color. The web-safe version is Hex
#336666. A complementary color is
#B38D90. The grayscale version is
#646464. A 20% lighter version of the original color is
#7FA5A2, and Hex
#193F3C is the 20% darker color. If the color is saturated by 10%, you get
#4A7370. If the color is desaturated by 10%, the color
#4E716E is obtained.