The hex color #2a293a is a dark color. The web-safe version is Hex
#333333. A complementary color is
#D5D6C5. The grayscale version is
#2F2F2F. A 20% lighter version of the original color is
#5D5C6D, and Hex
#000007 is the 20% darker color. If the color is saturated by 10%, you get
#2A283B. If the color is desaturated by 10%, the color
#2B2A39 is obtained.