The hex color #5d767c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#A28983. The grayscale version is
#707070. A 20% lighter version of the original color is
#90A9AF, and Hex
#2A4349 is the 20% darker color. If the color is saturated by 10%, you get
#5B777D. If the color is desaturated by 10%, the color
#5F757B is obtained.