The hex color #543f9d is a dark color. The web-safe version is Hex
#663399. A complementary color is
#ABC062. The grayscale version is
#656565. A 20% lighter version of the original color is
#8772D0, and Hex
#210C6A is the 20% darker color. If the color is saturated by 10%, you get
#523BA3. If the color is desaturated by 10%, the color
#564397 is obtained.