The hex color #2d3037 is a dark color. The web-safe version is Hex
#333333. A complementary color is
#D2CFC8. The grayscale version is
#313131. A 20% lighter version of the original color is
#60636A, and Hex
#000004 is the 20% darker color. If the color is saturated by 10%, you get
#2D3038. If the color is desaturated by 10%, the color
#2D3036 is obtained.