The hex color #5b83c0 is a dark color. The web-safe version is Hex
#6699CC. A complementary color is
#A47C3F. The grayscale version is
#8A8A8A. A 20% lighter version of the original color is
#8EB6F3, and Hex
#28508D is the 20% darker color. If the color is saturated by 10%, you get
#5682C5. If the color is desaturated by 10%, the color
#6084BB is obtained.