The hex color #2a10dd is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#D5EF22. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#5D43FF, and Hex
#0000AA is the 20% darker color. If the color is saturated by 10%, you get
#2508EA. If the color is desaturated by 10%, the color
#2F18D0 is obtained.