0:06 Hello. Today I'd like to talk about masstone and undertone in Winsor & Newton Professional Watercolours. Masstone is the colour of the paint that comes straight out of the tube. Undertone is found in the same colour once it has been stretched out or diluted.
0:21 Let's start with a dramatic example of how different the undertone can be from the masstone using this Winsor & Newton Transparent Yellow. Here's the rather brown masstone, but look how the undertone reveals a bright yellow - completely different from the masstone. Let's look at these other colours: Here is Quinacridone Gold, which starts as a dark reddy-brown and is diluted to reveal a rich orange brown. Green Gold is a transparent watercolour with a masstone of dark olive. When diluted we see a yellowy-green.
0:58 Here is Phthalo Turquoise, which starts almost black, but has a blue-green turquoise undertone. Prussian Blue reveals rich blue-black undertones with hints of red. Here's some Hooker's Green, which is a good example of a colour where the masstone and undertone are similar. Payne's Grey comes out of the tube looking almost black, but when diluted reveals a blue-grey undertone.
I hope you'll be able to apply this to your work in the future by exploring the hidden undertones of colours.