Thanks for the technical details relating to the colours. Does the currently low angle sun have an effect on the colour/tone perceived?
Here is a Victorian terraced house in East London.

This was a commissioned drawing. Thank you to my client for the commission and for their permission to post the picture here.
There were two interesting challenges in this drawing. One was the fact that the front of the house was obscured by parked cars. The other was the characteristic colour of the brickwork: a clean and lively yellow. I wanted to draw the fence without the cars, so as to show the whole house. And I wanted to get that yellow right.
I was stationed on the other side of the road. There were cars parked nose-to-tail on both sides of the road. To draw the part behind the parked cars, I crossed the road and had a look then come back and sketched and then wandered about…
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