Spectacle lens comprising an anti-reflective coating

A method configured for calculating, by a computer, data of a spectacle lens, the data of the spectacle lens including data of an anti-reflective coating, the data of the anti-reflective coating including data of a layer stack, the data of the spectacle lens including the data of the anti-reflective coating being configured for the purpose of a use for a manufacture of the spectacle lens comprising the anti-reflective coating, the method comprising the step of:

• determining in the data of the layer stack a layer thickness of each layer of the layer stack such that a calculation of a residual reflectance color in CIE 1976 L*a*b* for the data of the spectacle lens comprising the data of the layer stack meets a predefined residual reflectance color in CIE 1976 L*a*b* color space at predefined angles of incidence, wherein
• at a predefined angle of incidence of 0°, positions of CIELAB a*,b* coordinates for the predefined residual reflectance color lie in a rectangular region in an a*,b* plane, the rectangular region in the a*,b* plane being defined by 2≤a*≤9.2 and 7≤b*≤16.8,
• at each predefined angle of incidence lying in an interval of angles of incidence limited by a predefined angle of incidence of greater than 0° and a predefined angle of incidence of 75°, each position of CIELAB a*, b* coordinates for the predefined residual reflectance color, in the a*,b* plane, has a value D≥0, with D=b*+6.5·a*+6.5.