The hex color #503c7c is a dark color. The web-safe version is Hex
#663366. A complementary color is
#AFC383. The grayscale version is
#585858. A 20% lighter version of the original color is
#836FAF, and Hex
#1D0949 is the 20% darker color. If the color is saturated by 10%, you get
#4F3980. If the color is desaturated by 10%, the color
#513F78 is obtained.