The hex color #1a0f7f is a dark color. The web-safe version is Hex
#330066. A complementary color is
#E5F080. The grayscale version is
#383838. A 20% lighter version of the original color is
#4D42B2, and Hex
#00004C is the 20% darker color. If the color is saturated by 10%, you get
#170B86. If the color is desaturated by 10%, the color
#1D1378 is obtained.