Hexcode difference between color primary and colorPrimaryDark?

Question

Is there a constant value to add to the hexcode of the Toolbar color, to derive a status bar color?

Answer 1

To really stick to the guidelines, you should choose your primary and primaryDark color among these.

• colorPrimary should be one of the 500s;
• colorPrimaryDark should be one of the 700s.

I am not aware of a color relation between the two, but maybe you can guess one by looking at the examples.