The hex color #1d35a4 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#E2CA5B. The grayscale version is
#525252. A 20% lighter version of the original color is
#5068D7, and Hex
#000271 is the 20% darker color. If the color is saturated by 10%, you get
#1832AC. If the color is desaturated by 10%, the color
#22389C is obtained.