The hex color #585adc is a dark color. The web-safe version is Hex
#6666CC. A complementary color is
#A7A523. The grayscale version is
#858585. A 20% lighter version of the original color is
#8B8DFF, and Hex
#2527A9 is the 20% darker color. If the color is saturated by 10%, you get
#5456E5. If the color is desaturated by 10%, the color
#5C5ED3 is obtained.