The hex color #1b15d9 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#E4EA26. The grayscale version is
#585858. A 20% lighter version of the original color is
#4E48FF, and Hex
#0000A6 is the 20% darker color. If the color is saturated by 10%, you get
#150EE6. If the color is desaturated by 10%, the color
#211CCC is obtained.