Value – Amount of white (tint), black (shade) or grey (tone) in a hue
The value of a colour is the amount of tint, shade, tone and hue of colour all combined that is in a specific colour.
To remember what value means, recall the following mnemonic:
I value these pictures so much, I'm going to bid a massive amount for them.
VALUE = AMOUNT
What some artists find very useful is to create a chart or sample chart of their primary oil tubes. This helps them choose the most effective colour option for their paintings.
So for their cobalt blue colour, for example, they would create tint, shade and tone charts and that would be their value charts:
Or if an artist wants to create a more comprehensive colour sample chart, they can combine these three into one. These charts can be created for all the important colours that an artist uses, as you can see below: