Adjust Image Saturation

Saturation moves every colour equally

A saturation adjustment scales all the colours in an image by the same factor, so a red becomes a stronger red and a blue a stronger blue. That is simple to understand and occasionally too blunt, because it pushes the colours that are already strong into an unnatural range, which is how a landscape ends up with lurid skies. Vibrance is the more useful default: it increases the saturation of the muted colours and leaves the already vivid ones nearly alone, so the result looks better without an oversaturated area.

NoteIf you want a big increase without lurid colours, vibrance is the better control.

A dull image may not need more saturation

A photograph can look flat and lifeless for reasons that have nothing to do with colour intensity, and adding saturation will not fix any of them. A hazy image looks dull because of a contrast problem. An overexposed image looks dull because the highlights are washing out the colour. A photo with a strong colour cast looks wrong because of white balance. In all three cases, correcting the underlying problem restores the appearance properly, and adding saturation on top just makes an already incorrect image more colourful.

• Hazy or flat: fix contrast, not saturation.
• Washed out: fix exposure, not saturation.
• Colours look wrong: fix white balance first.
• Dull but technically correct: a small vibrance increase is appropriate.
• If the photo is correct, it may simply be a subdued day. That is not a fault.

NoteSaturation is the last adjustment, not the first. Correct the exposure and contrast before touching colour.

Colour cast comes before saturation

A cast is a tint over the whole image, usually caused by incorrect white balance or by lighting that does not match the assumed source. Everything in the frame is shifted, and boosting saturation intensifies the cast rather than correcting it, making a green cast greener. The order that matters is: correct the white balance so neutral objects are actually neutral, then adjust contrast, and only then increase saturation if the image is still flat. Skipping to saturation first is a common and frustrating mistake.

• Correct white balance so whites and greys read as neutral.
• Then adjust contrast.
• Then, if needed, add vibrance or saturation.
• Boosting saturation before white balance intensifies the cast.
• Neutral objects are the reference, not skin tone.

NoteA colour cast plus high saturation is worse than either problem alone.

Where vivid saturation stops looking natural

There is a point where saturation goes beyond what the eye saw, and the result reads as a filter rather than a photograph. Colours start to clip in a channel, which flattens the variation within a single colour, so a sky becomes a single flat blue and a face loses the subtle gradation that makes it look real. Skin tones are usually the first thing to look wrong, because skin has a narrow natural range and it is what viewers judge a portrait by. Small increases are usually enough, and reducing the greens or yellows slightly alongside can correct a common over-saturated look.

• Skin tones are the most reliable check on a portrait.
• Channel clipping flattens variation within a colour.
• A sky turning into one flat blue is a clear sign of too much.
• Reduce greens and yellows slightly to counter a heavy look.
• Small increases are almost always enough.