The hex color #596bef is a dark color. The web-safe version is Hex
#6666FF. A complementary color is
#A69410. The grayscale version is
#919191. A 20% lighter version of the original color is
#8C9EFF, and Hex
#2638BC is the 20% darker color. If the color is saturated by 10%, you get
#5367F8. If the color is desaturated by 10%, the color
#5F6FE6 is obtained.