The hex color #1a15e2 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#E5EA1D. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#4D48FF, and Hex
#0000AF is the 20% darker color. If the color is saturated by 10%, you get
#140EF0. If the color is desaturated by 10%, the color
#211CD5 is obtained.