The hex color #1a10ce is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#E5EF31. The grayscale version is
#535353. A 20% lighter version of the original color is
#4D43FF, and Hex
#00009B is the 20% darker color. If the color is saturated by 10%, you get
#1409DA. If the color is desaturated by 10%, the color
#2017C2 is obtained.