FontWeight

The weight of a font face, on the standard 100 – 900 scale used by OpenType’s wght axis and by CSS’s font-weight. Carried by FontStyle.Weight; availability of each weight depends on which faces are installed for the chosen font family.

Constant	Value	Description
tbThin	100	The thinnest weight (also called Hairline).
tbExtraLight	200	Also known as Ultra Light.
tbLight	300	A noticeably thinner stroke than the regular weight.
tbNormal	400	The default weight. Also known as Regular. Newly-constructed FontStyle objects start here.
tbMedium	500	Slightly heavier than tbNormal.
tbSemiBold	600	Heavier still; also known as Demi Bold.
tbBold	700	The standard bold weight.
tbExtraBold	800	Also known as Ultra Bold.
tbHeavy	900	The heaviest weight. Also known as Black.