The hex color #1e18ce is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#E1E731. The grayscale version is
#575757. A 20% lighter version of the original color is
#514BFF, and Hex
#00009B is the 20% darker color. If the color is saturated by 10%, you get
#1812DA. If the color is desaturated by 10%, the color
#241EC2 is obtained.