The hex color #596fa0 is a dark color. The web-safe version is Hex
#666699. A complementary color is
#A6905F. The grayscale version is
#787878. A 20% lighter version of the original color is
#8CA2D3, and Hex
#263C6D is the 20% darker color. If the color is saturated by 10%, you get
#566EA4. If the color is desaturated by 10%, the color
#5C709C is obtained.