These are all Rembrandt colours.
234 – Raw Sienna – a hard colour to use, not very intense. Nearly gone and I shan’t replace
227 – Yellow Ochre – a lovely earthy colour, earthy also in texture. I use it a lot.
224 – Naples Yellow Red – a sort of yellow, makes a nice grey with cobalt blue
508 – Prussian Blue – I use it for shadows, also mixed with Alizarin Red and Indian Yellow to make black
701 – Lamp black – used for monochrome sketches
629 – Green Earth – doesn’t dissolve easily, a very hard colour to use, makes a pale green, never very intense
416 – Sepia – used for monochrome sketches
485 – Indanthrene Blue – a good reliable solid blue, for sea, but not for British skies
377 – Cadmium Red Medium – pillar box red, good for road signs. A very strong colour. Only minute parts are needed for mixing colours
326 – Alizarin Red – I use it with Prussian blue and Indian Yellow to make black.
244 – Indian Yellow – strong orange-yellow that makes tones, darker and lighter. An earthy colour
512 Cobalt Blue Ultramarine – British skies, and for mixing to make greens.