The hex color #6c787c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#938783. The grayscale version is
#757575. A 20% lighter version of the original color is
#9FABAF, and Hex
#394549 is the 20% darker color. If the color is saturated by 10%, you get
#6B787D. If the color is desaturated by 10%, the color
#6D787B is obtained.