Color Inverter

What this tool does

You want the opposite of a colour: the value you would get by flipping it, the way a photographic negative flips the colours of a photo. Maybe you are working out a dark-mode counterpart, checking how a colour behaves when reversed, or just curious what the inverse of a particular colour is. Working that out by hand means doing arithmetic on three numbers.

That is what this does. You give it a colour, and it returns its inverse, the colour on the far side of every channel, ready to copy in the usual formats. It does the flip for you and shows the result beside your original, so you can see at a glance what inverting your colour actually produces.

How to use it

1. Enter your colour. Type or paste your colour in any common format, or set it with the picker.
2. Read the inverse. The tool shows the inverted colour next to your original, with a swatch and its codes.
3. Copy what you need. Take the inverted colour in whichever format the job calls for.

Give it a colour and read off its inverse, with both shown side by side so the relationship between them is easy to see.

How it works

Inverting a colour is done channel by channel on its red, green, and blue values. Each channel runs from 0 to 255, and the tool replaces every value with 255 minus itself, so 0 becomes 255 and 255 becomes 0, with everything in between flipping to its opposite. Red at 30 becomes 225, and so on for green and blue.

The result is the exact inverse of your colour, the same flip a photo negative applies to an image. It is a precise, mechanical operation rather than a judgement call, which is why the same colour always inverts to the same result. Once the three channels are flipped, the tool shows the new colour in the usual formats for you to copy.

What inverting a colour means

Inverting a colour means turning each part of it into its opposite amount. Because colour on a screen is built from red, green, and blue light, flipping each of those to the other end of its scale gives you the colour's negative, the same idea as the negatives that old film cameras produced. Light areas become dark, dark areas become light, and each colour turns into its counterpart.

A few examples make it concrete. Black, which is no light at all, inverts to white, which is full light, and white inverts back to black. A bright red inverts to a cyan, and a warm yellow inverts to a deep blue. In every case the inverse is as far from the original as the scale allows on each channel, which is what gives inverted colours their strong, opposed feel.

Inverse and complementary are not the same

It is worth clearing up a common mix-up, because the inverse of a colour is often confused with its complementary colour, and they are not quite the same thing. The inverse is a flip of the red, green, and blue channels. A complementary colour is the one directly opposite on the colour wheel, which is a flip of the hue while the brightness stays put.

For many colours the two land close together, which is why they get muddled, but they can differ, especially in how light or dark the result is. If you specifically want the colour opposite on the wheel, for a classic contrasting pairing, a complementary tool is the right one. If you want the true negative, the channel-by-channel flip, this inverter is what you need. Knowing which you are after saves confusion later.

Why invert a colour

One common reason is working with negatives and reversals. If you are thinking about how a colour scheme might look flipped, or need the reversed counterpart of a colour for an effect, the inverse gives it to you directly. It is also a quick way to find a very high-contrast partner for a colour, since the inverse sits at the opposite end of every channel.

It comes up in interface and image work too. Inversion is the idea behind some dark-mode and high-contrast treatments, and it is useful when you are reasoning about how colours behave when reversed. Even just to understand a colour better, seeing its inverse tells you something about where it sits, since the negative reveals the opposite corner of the colour space.

Inversion in practice

When you put inversion to use, the thing to watch is that a flipped colour does not always carry the same mood as the original. Inverting a soft, pale colour tends to give a deep, dark one, and the other way round, so a gentle scheme can become bold once reversed. That is the nature of a negative, and it is worth previewing rather than assuming the feel will survive the flip.

Contrast is where inversion is most dependable. Because the inverse sits opposite on every channel, it is almost always sharply distinct from the original, which makes it a reliable starting point when you need two colours that stand well apart. Take the inverse as that strong-contrast partner or negative counterpart, then adjust it by eye if the exact shade needs softening for the design.

Questions people ask

How do I invert a colour?

Enter the colour and the tool returns its inverse, flipping each of the red, green, and blue channels to the opposite end of its scale. The result is the colour's negative.

Is the inverse the same as the complementary colour?

Not exactly. The inverse flips the red, green, and blue channels, while a complementary colour is the one opposite on the colour wheel. They are often close but can differ, especially in lightness.

What does black invert to?

White, and white inverts to black. Black is no light and white is full light, so flipping every channel turns one into the other.

Is an inverted colour good for contrast?

Usually, yes. Since the inverse sits at the opposite end of every channel, it tends to stand sharply apart from the original, which makes it a strong high-contrast partner.

References

1. World Wide Web Consortium (W3C), CSS Color Module Level 4. https://www.w3.org/TR/css-color-4/
2. RGB color model, the red, green, and blue channels a screen uses. Wikipedia. https://en.wikipedia.org/wiki/RGB_color_model
3. Complementary colors, and how they differ from a channel inversion. Wikipedia. https://en.wikipedia.org/wiki/Complementary_colors