LuttieHSL Secondary — Selective Color Grading in Your Browser
Not every correction should apply to every pixel. HSL secondary correction lets you target a specific color range — sample it with the eyedropper, then adjust its hue, saturation, and luminance without touching anything else in the image. The same technique used in DaVinci Resolve's Qualifier, running entirely in your browser.
Three axes of control over any color range.
After sampling with the eyedropper, you get independent control over each dimension of the selected color.
H — Hue
Shift the actual color of the isolated range. Turn a dull orange sunset into a rich amber, or push a blue sky toward a deeper cyan.
S — Saturation
Increase or decrease the intensity of the color. Desaturating a background while keeping foreground colors vivid is a classic selective technique.
L — Luminance
Control the brightness of the selected color range without affecting its hue or saturation. Darken overly bright skies or lift shadows in specific color areas.
Click the eyedropper in Luttie, then sample any of these color ranges to isolate and adjust it independently.
When selective color correction matters.
Sky replacement grade
Sample the sky's blue, then shift its hue toward a more dramatic cyan or push its saturation without affecting clouds, buildings, or skin in the same frame.
Skin tone correction
Use the eyedropper on skin tones to isolate the orange-yellow range, then reduce saturation or shift luminance to correct uneven skin without touching other colors.
Selective desaturation
The classic 'pop' effect — fully desaturate everything except one specific color. Use HSL secondary to keep reds vivid in a grayscale scene, for example.
Vegetation grading
Green foliage often goes flat in mixed lighting. Sample the green range and push its luminance or hue to make trees and grass feel alive without affecting the rest of the image.
Frequently asked questions
What is HSL secondary in color grading?
HSL secondary (short for Hue, Saturation, Luminance secondary correction) is a targeted color adjustment that lets you isolate a specific color range and modify it independently from the rest of the image. Unlike global tools like curves or color wheels that affect every pixel, HSL secondary only modifies the pixels that fall within your sampled color range. It's the same tool used in DaVinci Resolve's Qualifier and Premiere Pro's HSL Secondary panel.
How do I do selective color grading online?
In Luttie, open the HSL Secondary panel and click the eyedropper. Click anywhere on your image to sample the color you want to isolate — the tool automatically builds a color range around that sample. Then adjust the Hue, Saturation, and Luminance sliders to modify only that color range. You can expand or narrow the selection range to fine-tune exactly which pixels are affected.
Can I target specific colors in my image?
Yes. The eyedropper samples a color directly from your image and creates an HSL mask around it. You can then widen or narrow the tolerance of that mask to control how broadly the correction applies — a tight mask for precise correction of a specific skin tone, or a broad mask for general sky grading. All adjustments preview in real time before you export.
Target any color in your image — for free.
No DaVinci Resolve license needed. Runs in any browser.
Open the HSL secondary tool