The hex color #4b15dd is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#B4EA22. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#7E48FF, and Hex
#1800AA is the 20% darker color. If the color is saturated by 10%, you get
#480DE9. If the color is desaturated by 10%, the color
#4E1DD1 is obtained.