White Balance Fixer

Light has color. Indoor bulbs are warm and orange, shade and overcast skies are cool and blue, fluorescent tubes add green. The eye adapts without us noticing, but cameras and phones sometimes guess wrong, and the photo ends up with a color cast. This tool corrects white balance, automatically or by clicking something that should be neutral.

Why color casts happen

A camera has to decide what “white” is under the current light. Mixed lighting, a dominant color in the scene such as a green lawn or a red wall, and unusual light sources confuse automatic white balance. A sunset gets neutralized into dullness, a candlelit dinner turns orange, a snowy scene looks blue.

Auto: gray world

This method assumes that the colors of a typical scene average out to neutral gray. It measures the average of each color channel and scales them to match. It works well for varied scenes with many colors, and less well when one color dominates the frame.

Auto: white point

This method assumes the brightest areas should be white and balances the image so they are. It is effective for documents, whiteboards, snow, white walls and product shots on white. Scenes without real white areas, or with colored light sources in the frame, can mislead it.

Picked neutral

The most reliable method is to click something you know is neutral: paper, a gray card, concrete, a white shirt not in direct sunlight. The tool calculates the correction that makes that point gray and applies it to the whole image. Avoid clicking bright highlights, where channels may be clipped.

Warmth and tint

After any correction, warmth shifts the image along the blue-to-amber axis and tint along the green-to-magenta axis. Use them to fine-tune taste: a little warmth flatters portraits, a cooler setting suits winter scenes. In “Sliders only” mode they are the only adjustment.

Strength

Neutral is not always the goal. A golden-hour photo should stay golden. Strength lets you apply only part of the correction, keeping some of the original mood while removing an unpleasant cast.

Corrected like a camera

The channels are multiplied in linear light, the physical intensity before screen gamma, which is how cameras apply white balance. Colors shift naturally across shadows and highlights, instead of the flat tinted look produced by simply adding or subtracting a color.

Limits

JPEG files have already been processed by the camera, so extreme casts lose some color information that cannot be recovered. Mixed lighting, such as a window on one side and a lamp on the other, cannot be fully fixed with one global correction. For the best results, shoot in raw format and use RAW to JPG with automatic white balance.

Getting it right in camera

For future shots, set the camera or phone to a fixed white balance preset matching the light, such as tungsten indoors or shade outdoors, or photograph a gray card at the start of a session to balance on later. Consistent white balance across a set saves editing time.

Related tools

Check channel balance in the Image Histogram RGB view. For creative color grades after neutralizing, use Split Tone Image or the LUT Previewer. The Image Color Picker shows exact color values of any point.