The hex color #1c0aa7 is a dark color. The web-safe version is Hex
#330099. A complementary color is
#E3F558. The grayscale version is
#444444. A 20% lighter version of the original color is
#4F3DDA, and Hex
#000074 is the 20% darker color. If the color is saturated by 10%, you get
#1804B1. If the color is desaturated by 10%, the color
#20109D is obtained.