The hex color #52666c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#AD9993. The grayscale version is
#616161. A 20% lighter version of the original color is
#85999F, and Hex
#1F3339 is the 20% darker color. If the color is saturated by 10%, you get
#50666D. If the color is desaturated by 10%, the color
#54666B is obtained.