The hex color #4e19e7 is a dark color. The web-safe version is Hex
#6600FF. A complementary color is
#B1E618. The grayscale version is
#6F6F6F. A 20% lighter version of the original color is
#814CFF, and Hex
#1B00B4 is the 20% darker color. If the color is saturated by 10%, you get
#4B10F3. If the color is desaturated by 10%, the color
#5122DB is obtained.