Tone Curve is a ComfyUI node in the AKURATE/Darkroom/Grading category from ComfyUI-Darkroom. Inputs: image, preset, shadows, darks. Outputs: IMAGE. Run it in…

Professional color grading and film emulation suite — 29 nodes: 161 film stocks with real Capture One curve data, Camera Raw tools, Resolve-level grading (LGG, Log Wheels, Hue vs Hue, Color Warper), lens optics with 102 real lens profiles. Zero API costs.

ComfyUI-Darkroom

image

preset

shadows

darks

midtones

lights

highlights

red_shadows

red_highlights

green_shadows

green_highlights

blue_shadows

blue_highlights

strength

DarkroomToneCurve

Tone Curve

Name	Type	Default	Description
image	IMAGE		—
preset	COMBO	Custom (manual)	Select a tone curve preset or use Custom for manual control
shadowsopt	FLOAT	0-50–50	Curve point at 0% luminance (black point)
darksopt	FLOAT	0-50–50	Curve point at 25% luminance
midtonesopt	FLOAT	0-50–50	Curve point at 50% luminance
lightsopt	FLOAT	0-50–50	Curve point at 75% luminance
highlightsopt	FLOAT	0-50–50	Curve point at 100% luminance (white point)
red_shadowsopt	FLOAT	0-50–50	Red channel shadow offset
red_highlightsopt	FLOAT	0-50–50	Red channel highlight offset
green_shadowsopt	FLOAT	0-50–50	Green channel shadow offset
green_highlightsopt	FLOAT	0-50–50	Green channel highlight offset
blue_shadowsopt	FLOAT	0-50–50	Blue channel shadow offset
blue_highlightsopt	FLOAT	0-50–50	Blue channel highlight offset
strengthopt	FLOAT	1.000–1	Blend between original (0) and curved (1)

Tone Curve

Inputs (14)

Outputs (1)