What resources helped you translate color theory into stronger digital artwork?

[Isabella.M]

I'm a self-taught digital artist, and I've hit a plateau where my work feels technically competent but lacks a cohesive mood or visual impact. I suspect my weak spot is a poor intuitive grasp of color theory, as I often default to safe, muted palettes or clash colors without understanding why. I want to systematically study color relationships, harmony, and the psychological effects of different schemes to make more intentional choices. For artists who have deepened their understanding of color, what resources or exercises would you recommend beyond the basic color wheel? Should I focus on studying master paintings, work with physical pigments, or are there specific digital tools or courses that helped you translate theory into practical, improved artwork?