Seems in agreement to me-- The white will contain red, green, and blue, which will make a red-green fringe against blue, and green-blue fringe against red.
The sensitivity of the eye is also nonlinear, so bright-against-bright is going to have far less contrast than bright-against-dark.
The sensitivity of the eye is also nonlinear, so bright-against-bright is going to have far less contrast than bright-against-dark.