The hex color #526a7c is a dark color. The web-safe version is Hex
#666666. A complementary color is
#AD9583. The grayscale version is
#686868. A 20% lighter version of the original color is
#859DAF, and Hex
#1F3749 is the 20% darker color. If the color is saturated by 10%, you get
#506A7E. If the color is desaturated by 10%, the color
#546A7A is obtained.