Hello,
A feature that I would like to see in Affinity Designer is that of a "color scheme generator" of sorts - or at least a color guide that displays color harmonies (with tints and shades of each color). This guide would let you pick a color, and then would generate colors in different categories that would go well with that color (i.e. analogous, complementary, split complementary, etc.) If this is not yet available, I think it would be really helpful.
Thank you!