I want to achieve a certain hue but also have the color that carries that hue contain a certain opacity.
For example if I were after
50% opacity, the color I would want to identify is the (dark) shade of red that when at
50% opacity yields
Is there an equation I can use that lets me plug in the desired hue and alpha to identify the color values that produce that hue when at the given opacity value?
(I know this won't exist for all target color / alpha combinations, but I'd like to find the equation that specifies the parameters for those combinations that are achievable.)