The hex color #1f29e0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#E0D61F. The grayscale version is
#636363. A 20% lighter version of the original color is
#525CFF, and Hex
#0000AD is the 20% darker color. If the color is saturated by 10%, you get
#1823ED. If the color is desaturated by 10%, the color
#262FD3 is obtained.