The hex color #1a1fc0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#E5E03F. The grayscale version is
#535353. A 20% lighter version of the original color is
#4D52F3, and Hex
#00008D is the 20% darker color. If the color is saturated by 10%, you get
#141ACB. If the color is desaturated by 10%, the color
#2024B5 is obtained.