The hex color #5c7c7c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#A38383. The grayscale version is
#717171. A 20% lighter version of the original color is
#8FAFAF, and Hex
#294949 is the 20% darker color. If the color is saturated by 10%, you get
#5A7D7D. If the color is desaturated by 10%, the color
#5E7B7B is obtained.