Orthosia incerta may be complete or broken up into three blotches; upper stigmata large, the reniform generally dark, both edged with pale; a strong thick median shade, sometimes bent at middle and entire, often marked only at costa and inner margin; hindwing pale or dark grey with dark cellspot and pale fringe. The markings are all clearer in the grey unsuffused forms: of these the chief are pallida Lampa from Sweden with the ground colour pale grey, finely striated with dark, and the two dotted cross lines;- "coerulescens" Tutt with the ground colour pale bluish grey; — "subsetaceus" Haw.which is dark slaty
Palatinate (colour) The precise colour of palatinate purple used by the University varies a good deal. Its most long-established usage is in the University's academic dress and sporting colours, both of which use a significantly paler shade than that used by the university for corporate purposes. The palatinate purple used for the academic robes is said by Shaw (1966) to be British Colour Council No. 177 "Crocus" from the second (1951) edition of the "Dictionary of Colour Standards". The shade of purple used by Durham University in its corporate branding, as of 2017, is: Pantone number 255C; CMYK: 51, 91, 0, 34;