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Hue/Saturation per Range

Picks one colour on the hue wheel and changes only that colour: turn greens a little more yellow, mute a loud red, or make the blues deeper.

Hue/Saturation per Range — before / after
In ComfyUI Add Node → ComfyUI-JH-PixelPro → color → Hue/Saturation per Range
Good for Calming a colour that is too loud, fixing foliage or sky colour, shifting a product colour, selective desaturation

When to use it

This is the selective-colour move from a photo editor's Hue/Saturation panel. You choose a centre colour in degrees on the hue wheel and a band width. Pixels near that hue are affected most; the effect fades smoothly to nothing at the band's edge, and grey pixels are left alone. Colours outside the band do not move at all, and brightness is never changed.

Hue wheel positions: 0 red, 60 yellow, 120 green, 180 cyan, 240 blue, 300 magenta.

Quick start

  1. Load Image → Hue/Saturation per Range → Preview Image.
  2. Set hue_center to the colour you want to change (for example 120 for green) and band_width to about 30.
  3. Move hue_shift or sat_mult and watch only that colour respond.

Settings

Setting Default What it does Tip
image required The picture to adjust.
hue_center 0 (0 to 360) The colour to target, in degrees on the hue wheel. 0 red, 60 yellow, 120 green, 180 cyan, 240 blue, 300 magenta.
band_width 30 (0 to 180) Half-width of the band in degrees. Full effect at the centre, fading to none at this distance. 30 narrow, 60 medium, 180 the whole wheel.
hue_shift 0 (-180 to 180) Rotates the hue inside the band, in degrees. Small values (5 to 20) look natural.
sat_mult 1.0 (0 to 2) Multiplies saturation inside the band. 1 is unchanged, 0 removes colour, 2 doubles it. 0.6 to calm a loud colour.
sat_add 0 (-1 to 1) Adds or subtracts saturation after the multiplication. Useful to colour up pale areas.

Output: image, the adjusted picture.

Tips from retouching

  • Widen band_width to 45 to 60 for natural-looking results; very narrow bands can leave visible edges in smooth gradients.
  • To calm red patches in skin, target 0 to 10 with a gentle sat_mult of about 0.8.
  • To push a sky deeper without touching skin, target 220 to 240 and raise sat_mult.
  • For several colours, chain more than one Hue/Saturation per Range. For a full panel with eight bands, see ColorLab.
  • Use Saturation Mask to protect already-strong colours from further boosting.
Under the hood

The image goes to HSV (Kornia). A band mask is built from the circular hue distance to hue_center: it is 1 at the centre and falls linearly to 0 at band_width; pixels with no saturation get 0. Hue is rotated by hue_shift × mask, saturation becomes s × (1 + (sat_mult − 1) × mask) + sat_add × mask clamped to 0..1, value is unchanged, and the result is blended with the input by the same mask. With band_width = 0 only pixels exactly at the centre hue are selected.

Example workflow

Hue/Saturation per Range example workflow. It shifts and boosts one colour band of the portrait and shows the matching Saturation Mask. Copy workflows/sample_portrait.jpg into ComfyUI/input/. It uses only core ComfyUI nodes and this pack.

Result: Hue/Saturation per Range example workflow