Hue & Value Matrix
Pick the colours on your palette, anywhere from six to all twelve steps of the wheel. Each one becomes a column, stepped from light to dark at matched values, so every swatch in a row has the same value whatever its hue.
Yellow
This is an example six-colour palette. Click a slot to change it to your own paints.
Every swatch in a row shares one lightness (CIE L*), tinted toward your white or shaded toward your black. Click any swatch to copy its hex. Click a column heading to edit that slot.
As in your Sloan triangle, semi-neutral (B) mixes each colour's two neighbours on the wheel, so Red = Red-Violet + Red-Orange. Neutral (C) mixes the colours two steps away, so Red = Violet + Orange. The other nine colours are then mixed from those three primaries around the wheel. Empty slots are filled from their neighbours for these mixes.