The hex color #1b33d6 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#E4CC29. The grayscale version is
#616161. A 20% lighter version of the original color is
#4E66FF, and Hex
#0000A3 is the 20% darker color. If the color is saturated by 10%, you get
#142EE2. If the color is desaturated by 10%, the color
#2238CA is obtained.