The hex color #2a38d0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D5C72F. The grayscale version is
#666666. A 20% lighter version of the original color is
#5D6BFF, and Hex
#00059D is the 20% darker color. If the color is saturated by 10%, you get
#2433DB. If the color is desaturated by 10%, the color
#303DC5 is obtained.