Hey Product Hunt, Every painter, photographer, and designer has had the same experience: you look at a reference or a piece you admire, the color just works, and you cannot explain why. You can feel the harmony but not name it. You can see your shadows go muddy but not diagnose it. That gap is why we built Undertone. You point your phone at anything, a reference, a room, a photo, a painting, and in under five seconds it shows you the four things that actually determine whether color works: - Palette with proportions: colors sized by how much of the image they occupy, with painter-friendly names like Payne's Gray, not "Autumn Sunset Dream" - Color harmony plotted on the wheel: complementary, triadic, and so on, or honestly none, it will not pretend - A temperature map showing exactly where warm and cool live, the one that finally explains muddy shadows - Value structure: the grayscale squint every art student learns, done for you It is built for people who work with color seriously: painters, photographers, designers, and anyone grading or mixing. Not a hex-code picker, the actual architecture underneath an image. We would love your feedback, especially from painters and photographers. What part of color has always felt invisible to you?

Undertone - Color Analysis

See why colors work

See why colors work