Left Toolbar > Convert Nodes >
To HSV
The To HSV node converts the input image into an HSV image. HSV is Hue-Saturation-Value.
input
Img in RGB color space
output
Img in HSV color space
On the left toolbar choose Convert Nodes > HSV. >
Drag the To HSV icon into the Node Graph.
Connect the output of an image node into the Img input in the To HSV node.
Img
The Image to convert to HSV color mode.
Img
The HSV image.
Keep Alpha
If checked, the alpha channel of the input image is passed to the output image. Generates an image of HSVA color mode.