The hex color #2f30c9 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D0CF36. The grayscale version is
#636363. A 20% lighter version of the original color is
#6263FC, and Hex
#000096 is the 20% darker color. If the color is saturated by 10%, you get
#2A2BD3. If the color is desaturated by 10%, the color
#3435BF is obtained.