A Modified Triad Color Scheme consists of three hues with one or two spaces between them, i.e. yellow, orange, green.
Below are the three options I had to choose from that included Red-Violet as one of the hues.
Note that to reinforce my visual memory of the color wheel and how the colors work in various schemes, I alway have Yellow at the top, moving clockwise toward Blue. I chose the option on the top left (Red-Violet, Blue-Violet, Blue-Green) so that I had a greater play of warm and cool temperatures.
This year I am attempting to use the chosen hue (in this case Red-Violet) as the Dominant hue. I find this much more challenging than the original way I played the game. I recommend beginning with a modified version of the game in which the chosen hue is not necessarily dominant, but that it is one of the hues in the palette of the color scheme.
I also allow myself dilutions of my mixes to achieve a greater range of values. I recommend you stay with full intensity hues until you have a very good understanding of each pigment’s color value as it relates to the grayscale of values from white to black.
Limited Palette: Ultramarine Blue, Alizarin Crimson, Cobalt Turquoise, Manganese Blue, Aureolin