The hex color #1e18d4 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#E1E72B. The grayscale version is
#595959. A 20% lighter version of the original color is
#514BFF, and Hex
#0000A1 is the 20% darker color. If the color is saturated by 10%, you get
#1812E0. If the color is desaturated by 10%, the color
#241EC8 is obtained.