The hex color #596cb7 is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#A69348. The grayscale version is
#7F7F7F. A 20% lighter version of the original color is
#8C9FEA, and Hex
#263984 is the 20% darker color. If the color is saturated by 10%, you get
#556ABD. If the color is desaturated by 10%, the color
#5D6EB1 is obtained.