The hex color #2d15e6 is a dark color. The web-safe version is Hex
#3300FF. A complementary color is
#D2EA19. The grayscale version is
#636363. A 20% lighter version of the original color is
#6048FF, and Hex
#0000B3 is the 20% darker color. If the color is saturated by 10%, you get
#280DF3. If the color is desaturated by 10%, the color
#321DD9 is obtained.