MATLAB: GRB change in matlab

Question

Please, I want a brown color

if

 red = (:,:,1)
 green = (:,:,2)
 blue = (:,:,3)

if I want a brown color matrix how much should I enter?

Answer 1

This triplet: [0.5 0.3 0.25] seems to work:

figure(1)
patch([0 1 1 0], [0 0 1 1], [0.5 0.3 0.25])