Primaries again (D65 n°4)
CLICK ON THE PICTURES TO ZOOM ON ‘EM!
I still have to measure the colors I made from pure and mixed pigments here to be sure and more precise about that, but a priori I would estimate that about half of them are either badly rendered by the digital camera, or simply un-displayable on a standard computer screen (outside the sRGB gamut!)
The 41 colors I did so far are an attempt to get very close to ‘MacAdam’s limits,’ i.e., the best colors that can be made from pigments or other colored materials without ‘cheating’ with fluorescence (anyway fluo or ‘neon’ colors are fugitive, and another constraint of the colors made here is lightfastness… only highly lightfast pigments are used.)
Pigments are: Ultramarine Blue (Greenish,) 5 types of Phtalocyanines: Reddish-Blue, Cyan, Blue-Green and 2 Greens; Cadmium: Red, Red-Orange, Orange and 4 Yellow types; PR122 Sennelier & Lukas; Cobalt: Turquoise Brilliant & Dark, Pink; Lamp Black; Titanium & Zinc Whites.
Some colors might look like blacks while they are extremely saturated & dark colors (my darkest color is actually a Blue, not a Black! Its reflectance adds up to 2.6%!)
Next update I’ll clarify what’s possible to display on a screen (tomorrow probably.)