The hex color #4a19a8 is a dark color. The web-safe version is Hex
#330099. A complementary color is
#B5E657. The grayscale version is
#595959. A 20% lighter version of the original color is
#7D4CDB, and Hex
#170075 is the 20% darker color. If the color is saturated by 10%, you get
#4913B0. If the color is desaturated by 10%, the color
#4C1FA0 is obtained.