How to add legend in CIE diagram?

I have four points that I want to plot on CIE diagram. I am using the following command:

plotChromaticity
hold on
scatter([x_1 x_2 x_3 x_4],[y_1 y_2 y_3 y_4])
hold off

Now I want to add legend for these four points. For example: ‘red’, ‘blue’, ‘green’, and ‘yellow’.

How can I do that?

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plotChromaticity

hold on

x = rand(1,4);

y=rand(1,4);

name =["red", "blue", "green", "yellow"

name = 1×4 string array
    "red"    "blue"    "green"    "yellow"

for i=1:length(x)
    scatter(x(i), y(i),  'DisplayName', name(i));
end
hold off
legend

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How to add legend in CIE diagram?

How to add legend in CIE diagram?