Rotate the Hue of a PNG

any angle 0–360° · brightness preserved · batch · nothing uploaded

Shift every colour around the colour wheel by the same amount. Red becomes green at 120°, blue at 240°, and its opposite at 180°. Because the rotation happens around the luminance axis, the image keeps its original brightness and contrast — only the hues move.

Everything moves together

This is a global rotation, which is both its strength and its limitation. The relationships between colours are perfectly preserved — a complementary pair stays complementary, a harmonious palette stays harmonious — so a well-designed graphic recoloured this way still looks well-designed. That makes it excellent for generating variants: run a logo through 0°, 60°, 120°, 180°, 240° and 300° and you have six coherent colourways in a minute.

What it can't do is change one colour and leave the rest alone. If you want the red button green but the blue header untouched, this is the wrong tool — use Change color, which remaps a single colour within a tolerance.

Greys and blacks don't move

Rotating a hue that doesn't exist does nothing, so pure greys, blacks and whites come out unchanged. This is usually welcome: text, borders and neutral backgrounds survive, and only the coloured elements shift. It also means an almost-grey image will barely appear to change at all. If nothing seems to happen, the source is probably far less saturated than it looks — check with Saturation, and boost it before rotating if you want a stronger result.

Angles worth knowing

180° gives every colour's complement while keeping brightness, which is a very different result from Invert colors — inversion flips lightness too, turning dark into light. Compare the two on the same image; the difference is instructive.

120° and 240° are the triadic rotations, giving palettes that stay balanced. ±30° to 60° is subtle enough to look like a colour grade rather than a recolour — warming a scene toward orange or cooling it toward green. For picking harmonies from scratch, the Triadic and Complementary generators work from a single base colour.

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