HSL panel - simple explanation of hue, saturation and lumination

When I started editing pictures for the first time, I had no idea where to start. I wasn’t entirely sure which style spoke to me the most. I also had no clue what each slider did, so I used Lightroom's default filters, and when that didn’t meet my expectations, I used presets from the internet.

The result was that the edited photos looked worse than before.
Which, of course, was not the meaning.

After nearly three years of using Lightroom almost every day, I’ve developed a workflow that speeds up my editing process and ensures maximum satisfaction.

Exposure correction is always the first step (along with cropping and fixing the horizon) I take when I start working on photos.
Color correction is the next one.

I’m not just talking about presets. Yes, I often use them (you can download for free my favourites here), but they are only a starting point for editing the photos. The final look is the result of a few adjustments with the HSL sliders.
And a few little tricks, which I will write about soon.

You can find the HSL panel in the Develop module of Lightroom under the "Basic" panel, in the “Color mixer” section.

HSL panel - what is it

The HSL Panel is a precise way to target and adjust global colors within an image. You can adjust each of these elements - hue, saturation, luminance - for a specific color, giving you precise control over how each color appears in your image.
This allows for subtle color corrections, dramatic changes, or stylized effects.

Hue

Hue refers to the attribute of color that distinguishes one color from another. It defines the specific color perceived by the human eye. Adjusting the hue will shift the color spectrum of the selected range. For example, if you shift the hue of the reds, they could move toward more orange or more purple.

Saturation

Saturation controls the intensity or vividness of a color. Increasing the saturation makes the color more vibrant, while decreasing it makes the color more muted or desaturated (close to grey). Saturation influences the emotional impact and visual appeal of a color.

Lumination

Luminance refers to the brightness or lightness of a color. Luminance is a key component of how we perceive visual content because the human eye is more sensitive to certain parts of the light spectrum than the others. Adjusting the luminance slider will make a color lighter or darker without affecting its hue or saturation.

How to get the most of HSL panel

At the very beginning, you’ll likely be playing with all the sliders in Lightroom, pushing them as much as they can go. And that’s okay. You’ll quickly learn that it’s not about just cranking them up. Of course, I’m guilty of this myself.

But in the process, I also got to know what each slider does.

Nowadays, I use the HSL panel for subtle color adjustments, because I now know which hues I like most and which colors I prefer to be saturated in the photos, while others I like to keep subtly toned down.

The first rule I follow: less is more. Believe me, you don’t want to use all the sliders just because they’re there. Often, small changes have a bigger impact. Overusing can destroy a good picture. Not using enough most likely won’t do it.

The key colors I focus on first are the basic ones: yellows, blues, reds, and greens.

How colors appear in a photo is, of course, a personal matter, but I want to share the principles I follow when editing my photos. Maybe they’ll point you in the right direction to achieve the effect you’re aiming for.

Blue

I don’t like saturated blue skies on pictures. So I slightly shift the hue slider to the left towards cyan. Saturation goes down, and luminance goes up. I also slightly decrease the saturation of cyan. A nice amount of grain beautifully diffuses the perfect blue of the sky, giving it my favorite vintage look.

Yellow

Yellow in a photo is usually light. I love crispy, bright yellow light that contrasts nicely with deep shadows. That’s why I increase the saturation and luminance. Here, you need to be careful not to overdo it. If it seems like there’s too much yellow and the light looks unnatural, I gently raise the whites (in the basic panel).

Reds

Reds are what most often pop out of the photo. But to make sure it doesn’t look unnatural, it’s good to keep them in check. I usually slightly decrease saturation and adjust luminance (depending on the subject in the photo).

Greens

I love deep, dark, slightly desaturated greens. Luminance depends on the situation, but I often lower it. However, sometimes (especially at sunrise) green looks better to me when it’s brightened (increase luminance). The prettiest greens appear after rain, then I lower both saturation and luminance. The result is a deep, lush green.

Summary

Let me say it once again: these are just my personal choices, and you - depending on the style and aesthetic you want to pursue - will develop your own.
It’s all about practice. Hours spent editing will eventually make you use these tools very intuitively, and editing will at some point bring you joy.

In the next episode, my favorite tricks that visually elevate my photos with just a few subtle adjustments in Lightroom.

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