The hex color #1a13d0 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#E5EC2F. The grayscale version is
#545454. A 20% lighter version of the original color is
#4D46FF, and Hex
#00009D is the 20% darker color. If the color is saturated by 10%, you get
#140CDC. If the color is desaturated by 10%, the color
#201AC4 is obtained.