color.
Black tie is a semi-formal Western dress code for evening events, originating in British and American conventions for attire in the 19th century. In British English, the dress code is often referred to synecdochically by its principal element
for men, the dinner suit or dinner jacket.
CMYKH (c, m, y, k): (0, 0, 0, 84)
SRGBB (r, g, b): (40, 40, 40)
HSV (h, s, v): (0°, 0%, 15.7%)