The hex color #1f28da is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#E0D725. The grayscale version is
#606060. A 20% lighter version of the original color is
#525BFF, and Hex
#0000A7 is the 20% darker color. If the color is saturated by 10%, you get
#1822E6. If the color is desaturated by 10%, the color
#262ECE is obtained.