The hex color #2e675c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#D198A3. The grayscale version is
#505050. A 20% lighter version of the original color is
#619A8F, and Hex
#003429 is the 20% darker color. If the color is saturated by 10%, you get
#2B695D. If the color is desaturated by 10%, the color
#31655B is obtained.