How does the HSL panel in Lightroom actually work?

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freehobbysolutions Forum Member • Posts: 73
How does the HSL panel in Lightroom actually work?

Hi,

the HSL panel in Lightroom allows adjusting hsl for 8 color ranges I assume. Does anybody know how those ranges are calculated?

For ex. in the Saturation tab, what does "Reds" actually mean, how does it determine what is red and not orange for ex.

it's clear that RGB or other color space values are in play here, but how does the math actually work.

For ex rgb(255,0,0) is pure red and rgb(255, 165, 0) is orange

then, a pixel with the color rgb(255,83,0) will be affected by the oranges slider, or the reds slider? and how is that determined, simply by dividing the "difference" between the 2 colors equally?

I know you can also convert rgb to hsl or hsb, is the separation between colors done by dividing the h ranges into 8 equal parts centered on the "pure" colors?

thanks,

John

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