The hex color #2D1A37 is a dark color. The web-safe version is Hex
#333333. A complementary color is
#D2E5C8. The grayscale version is
#2A2A2A. A 20% lighter version of the original color is
#604D6A, and Hex
#000004 is the 20% darker color. If the color is saturated by 10%, you get
#2D1838. If the color is desaturated by 10%, the color
#2D1C36 is obtained.