For an exercise of painting, my teacher of PTO used of the burnt sienna. I saw that the color was not the same as the one I use…..
Indeed, his burnt sienna is more red than mine. I believed at first that I don’t well how to spread it (I beginner), then I bowed to the evidence : the color was not really the same.
No no ! I didn’t make a mistake about tube !
I did some research and I realised that there were no rule for color names. So, It can have there several colors for a blue ultramarine or for the burnt sienna.
On the other hand, pigments are regulated.
Here is a small comparison of burnt sienna of different marks according to the used pigments :
PR101 code is considered as red while the PBR7 code is considered as a brown color.
To change mark isn”t without consequence especially if you have a current painting. It will be necessary to look at first in colour charts to find the good colour. I invite you to visit the sites of the various provided you with marks.
featured image of Wharman (flickr)