The hex color #6373f5 is a dark color. The web-safe version is Hex
#6666FF. A complementary color is
#9C8C0A. The grayscale version is
#999999. A 20% lighter version of the original color is
#96A6FF, and Hex
#3040C2 is the 20% darker color. If the color is saturated by 10%, you get
#5E6FFE. If the color is desaturated by 10%, the color
#6877EC is obtained.